Question

The surface area of a solid metallic sphere is 616 cm square

Answer 1

answer is in the image.
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Answer 2

Answer:

→ Diameter = 14 cm

Step-by-step explanation:

→ Surface area = 4πr²

616 = 4πr²

4πr² = 616

2×2× 3.14 × r² = 616

${r}^{2} = \frac{616}{4 \times 3.14} \\ \\ {r}^{2} = 49 cm$

r = 7 cm

→ Diameter = 2 × r

→ Diameter = 2 × 7

→ Diameter = 14 cm