Question
Find the curved surface area of a cone whose height is 6
m and radius is 8 m. (in m 2 ) (approximate value) (The value of π is 22/7)Solution
Given -h=6m and r= 8m The surface area of the cone = πrl So now – l= √ (36+64) =10 CSA of cone = (22/7) ×8×10 =25.14×10 =251.4 m2 (Approx)
More Mensuration Questions
7, 14, 42, 210, 1470, ?
A sequence {Vₙ} is defined for n ≥ 1 by:
I) For every n ≥ 3: Vₙ = 2Vₙ₋₁ − Vₙ₋₂ + 4
It is known that - V₃ = 22 and ...
12, 20, 36, ?, 132, 260
If 6 4 x 5.75 9,
Then, (x²-1) = ?
...12 13 30 �...
112 162 199 ? 242 252
...21 11.5 13 ? 45.5 116.75
...171, 173, 183, 213 , ‘?’, 411, 633.
114 106 102 100 99 ?
...Choose the correct alternative
21: 3 ∷ 574: ?
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