Step-by-step explanation:
r = 21cm
v=
=
= 38808 cm³
T.S.A = 4πr²
= 4x22x3x21
= 5544cm²
Copyright © 2024 EHUB.TIPS team's - All rights reserved.
Answers & Comments
Step-by-step explanation:
r = 21cm
v=![\frac{4}{3} \pi {r}^{3} \frac{4}{3} \pi {r}^{3}](https://tex.z-dn.net/?f=%20%5Cfrac%7B4%7D%7B3%7D%20%5Cpi%20%7Br%7D%5E%7B3%7D%20)
=![\frac{4}{3} \times \frac{22}{7} \times 21 \times 21 \times 21 \frac{4}{3} \times \frac{22}{7} \times 21 \times 21 \times 21](https://tex.z-dn.net/?f=%20%5Cfrac%7B4%7D%7B3%7D%20%20%5Ctimes%20%20%5Cfrac%7B22%7D%7B7%7D%20%20%5Ctimes%2021%20%5Ctimes%2021%20%5Ctimes%2021)
=![4 \times 22 \times 21 \times 21 4 \times 22 \times 21 \times 21](https://tex.z-dn.net/?f=4%20%5Ctimes%2022%20%5Ctimes%2021%20%5Ctimes%2021)
= 38808 cm³
T.S.A = 4πr²
=![4\times\frac{22}{7}\times21\times21 4\times\frac{22}{7}\times21\times21](https://tex.z-dn.net/?f=4%5Ctimes%5Cfrac%7B22%7D%7B7%7D%5Ctimes21%5Ctimes21)
= 4x22x3x21
= 5544cm²