find teh volume of sphere whose surface area is 154 cm square . sole it
Answers
Answered by
2
Answer:
ANSWER
Surface area of a sphere=4πr
2
=154cm
2
⇒4×
7
22
r
2
=154cm
2
⇒r
2
=
4
154
×
22
7
⇒r
2
=
4
49
⇒r=
4
49
∴r=
2
7
=3.5cm
Volume of the sphere=
3
4
πr
3
=
3
4
×
7
22
×(3.5)
3
=
21
88
×42.875=179.67cm
3
Answered by
11
Answer:
4πr2=154
R2=154/4π
R=3.5cm
V=4/3πR3
V=179.5cm3
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