Question

plz solve this 3 questions
(56.) The surface area of a sphere is 1386 cm. Its volume is
(a) 1617 cm (b) 3234 cm (c) 4851 cm (d) 9702 cm
57.) If the surface area of a sphere is (1441) m' then its volume is
(a) (2881) m (b) (1887) m (c) (3001) m' (d) (316) m
58. The volume of a sphere is 38808 cm Its curved surfare area is​

Answer 1

Answer:

1. c)

Step-by-step explanation:

1386=4pie r square

1386=4×22/7×r^2

1386÷4=22/7×r^2

346.5×7/22=r^2

110.25=r^2

10.5=r

therefore volume=4/3pie r^3

4/3×22/7×1157.625

=>4851cm