Question

Find the total surface area of a sphere whose diameter is 14 cm.​

Answer 1

Answer: 616

Step-by-step explanation:

1. total surface area of sphere=4πr
2. $4pi r^{2}$

• r (radius)= diameter÷2(d/2)
• r=14/2
• r=7
• total surface area of sphere=
• $4 \times 22 \div 7 \times 7 \times 7 = 616$
• total surface area of sphere=
• $616cm ^{2}$
• check the answer