10. The radius of three among the four spheres
are 33 cm, 44 cm and 48 cm respectively. If
the surface area of the fourth sphere is equal
to the sum of surface area of the first three
spheres, find the radius of the fourth sphere.
Answers
Answered by
17
Answer:
Surface area of 4th sphere = Sum of surface area of the 3 spheres
= 4πR²=4π×33²+ 4π×44²+4π×48²
= 4πR²= 4π(33²+44²+48²)
=R²= 1089+1936+2304
=R=√5329
=R=73cm
Therefore, radius of fourth sphere is 73cm.
Correct me if I'm wrong.
Answered by
2
Answer:
Step-by-step explanaSurface area of 4th sphere = Sum of surface area of the 3 spheres
= 4πR²=4π×33²+ 4π×44²+4π×48²
= 4πR²= 4π(33²+44²+48²)
=R²= 1089+1936+2304
=R=√5329
=R=73cm
Therefore, radius of fourth sphere is 73cm.tion:
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