The surface area of sphere of …
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Posted by Ankesh Mishra 4 years, 10 months ago
- 2 answers
Yogita Ingle 4 years, 10 months ago
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.
Volume of cone = 1/3 πr2h
= 1/3 × 22/7 × (4)2 × 3
= 22/7 × 16
= 50.29cm2
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Yash Lohchab 4 years, 10 months ago
0Thank You