Mensuration Test

Result

Mensuration Test - 5

Score
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Rank
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Weekly Quiz Competition

Question 1
1 / -0

The surface area of a sphere with radius 5 cm is

A
50π cm²

B
100/3 cm²

C
100π cm²

D
25π cm²

Solution

Given: Radius = 5 cm
Surface area of the sphere = 4πr²
= 4π(5)²cm²
= 4 × π × 25 cm²
= 100π cm²
Question 2
1 / -0

The curved surface area of a right circular cone, whose base radius is 3 cm and slant height is 4 cm, is

A
24π cm²

B
12π cm²

C
48π cm²

D
21π cm²

Solution

Given: Base radius (r) of the cone = 3 cm
Slant height (l) of the cone = 4 cm
Curved surface area of the cone = πrl
= π × 3 × 4
= 12π cm²