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Nov 8
in
Mensuration
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Brainiak
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In the figure 7.12, a cylindrical wrapper of flat tablets is shown. The radius of a tablet is 7 mm and its thickness is 5 mm.
mensuration ex 7.1
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Nov 8
in
Mensuration
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Brainiak
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In figure 7.11, a toy made from a hemisphere, a cylinder and a cone is shown. Find the total area of the toy
mensuration ex 7.1
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Nov 8
in
Mensuration
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Brainiak
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A cylinder and a cone have equal bases. The height of the cylinder is 3 cm and the area of its base is 100 cm2 .
mensuration ex 7.1
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Nov 8
in
Mensuration
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Brainiak
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Observe the measures of pots in figure 7.8 and 7.9. How many jugs of water can the cylindrical pot hold ?
mensuration ex 7.1
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asked
Nov 8
in
Mensuration
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Brainiak
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The dimensions of a cuboid are 44 cm, 21 cm, 12 cm. It is melted and a cone of height 24 cm is made. Find the radius of its base
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asked
Nov 8
in
Mensuration
by
Brainiak
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Find the surface area of a sphere of radius 7 cm.
mensuration ex 7.1
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Nov 8
in
Mensuration
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Brainiak
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11.4k
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Find the total surface area of a cylinder if the radius of its base is 5 cm and height is 40 cm.
mensuration ex 7.1
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Nov 8
in
Mensuration
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Brainiak
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Find the volume of a sphere of diameter 6 cm
mensuration ex 7.1
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Nov 8
in
Mensuration
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Brainiak
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Find the volume of a cone if the radius of its base is 1.5 cm and its perpendicular height is 5 cm.
mensuration ex 7.1
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Oct 1
in
Trigonometry
by
Brainiak
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A kite is flying at a height of 60 m above the ground. The string attached to the kite is tied at the ground. It makes an angle of 60° with the ground.
trigonometry practice set 6.2
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14
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asked
Oct 1
in
Trigonometry
by
Brainiak
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A storm broke a tree and the treetop rested 20 m from the base of the tree, making an angle of 60° with the horizontal. Find the height of the tree.
trigonometry practice set 6.2
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8
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Oct 1
in
Trigonometry
by
Brainiak
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Two poles of heights 18 metre and 7 metre are erected on a ground. The length of the wire fastened at their tops in 22 metre
trigonometry practice set 6.2
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9
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1
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asked
Oct 1
in
Trigonometry
by
Brainiak
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Two buildings are facing each other on a road of width 12 metre. From the top of the first building, which is 10 metre high, the angle of elevation
trigonometry practice set 6.2
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8
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asked
Oct 1
in
Trigonometry
by
Brainiak
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11.4k
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From the top of a lighthouse, an observer looking at a ship makes angle of depression of 60°. If the height of the lighthouse is 90 metre
trigonometry practice set 6.2
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17
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1
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asked
Oct 1
in
Trigonometry
by
Brainiak
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A person is standing at a distance of 80m from a church looking at its top. The angle of elevation is of 45°. Find the height of the church
trigonometry practice set 6.2
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asked
Sep 30
in
Trigonometry
by
Brainiak
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proove that tan theta\sec theta - 1= tan theta + sec theta + 1/ tan theta + sec theta - 1}
trigonometry practice set 6.1
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16
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asked
Sep 30
in
Trigonometry
by
Brainiak
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Prove That: Sec 4 a ( 1 − Sin 4 a ) − 2 Tan 2 a = 1
trigonometry practice set 6.1
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Sep 30
in
Trigonometry
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Brainiak
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Prove That: Tan a ( 1 + Tan 2 a ) 2 + Cot a ( 1 + Cot 2 a ) 2 = Sin a Cos a
trigonometry practice set 6.1
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Sep 30
in
Trigonometry
by
Brainiak
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If tanθ+ 1/tanθ =2 thenshow that tan ^2 θ+ 1/ tan^2θ=2
trigonometry practice set 6.1
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6
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Sep 30
in
Trigonometry
by
Brainiak
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11.4k
points)
proove that viii. } secθ+tanθ=cosθ/(1−sinθ)
trigonometry practice set 6.1
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