the surface area of a sphere of radius 5cm is five times the area of CSA of a cone of radius 5cm. then find the volume the cone
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Surface area of the sphere=(4π×5×5) cm²
= (100π) cm².
Curved surface area of the cone=(π×4×l) cm²
=(4πl) cm²
∴ 100π=5×(4πl) ⇒ l=5 cm.
Now, l² = h² + r²
5²= h² + 4²
h²= 9
h= 3 cm.
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= (100π) cm².
Curved surface area of the cone=(π×4×l) cm²
=(4πl) cm²
∴ 100π=5×(4πl) ⇒ l=5 cm.
Now, l² = h² + r²
5²= h² + 4²
h²= 9
h= 3 cm.
hope it helps .
pls mark me as brainliest
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