find the surface area of the sphere of radius :-
1) 10.5
2) 5.6
Answers
Answered by
4
Answer:
5.6 is a correct answer
Step-by-step explanation:
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Answered by
3
Answer:
(i) r=10.5cm
SA=4πr
2
=4×
7
22
×
10
10.5
×
10
10.5
=
100
88×15×105
=1386 cm ²
(ii) r=5.6cm
SA=4πr
2
=[4×
7
22
×(5.6) ²
]cm 2
=[
7
88
×
10
5.6
×
10
5.6
]cm ²
=394.24 cm ²
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