Question

Find the slant height of a cone, if its curved surface area is 70 ²

and its

radius is 7cm.​

Answer 1

Given:-

• CSA of cone = 70 cm²
• Radius = 7 cm

To Find :-

slanght Height

Solution:-

As we know that

CSA = π rl

R is the Radius.

L is the slant height.

⇛70 = 22/7 × 7 × L

⇛70 = 22 × 1

⇛70/22 = L

➩ 3.18 = L

Answer 2

Given:-

CSA of cone = 70 cm²

Radius = 7 cm

To Find :-

slanght Height

Solution:-

As we know that

CSA = π rl

R is the Radius.

L is the slant height.

⇛70 = 22/7 × 7 × L

⇛70 = 22 × 1

⇛70/22 = L

➩ 3.18 = L