Find the surface area of a sphere of radius 1 | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) The radius $(r)$ of the sphere is $10.5 \, cm$.The formula for the surface area of a sphere is $4 \pi r^{2}$.Substituting the given values:Surface

Vedclass · Accepted Answer

$1386$

Vedclass · Answer

(A) The radius $(r)$ of the sphere is $10.5 \, cm$.The formula for the surface area of a sphere is $4 \pi r^{2}$.Substituting the given values:Surface area $= 4 	imes \frac{22}{7} 	imes (10.5)^{2} \, cm^{2}$$= 4 	imes \frac{22}{7} 	imes 10.5 	imes 10.5 \, cm^{2}$$= 4 	imes 22 	imes 1.5 	imes 10.5 \, cm^{2}$$= 88 	imes 15.75 \, cm^{2}$$= 1386 \, cm^{2}$Therefore,the surface area of the sphere is $1386 \, cm^{2}$.

Find the surface area of a sphere of radius $10.5 \, cm$.
Assume $\pi = \frac{22}{7}$. (in $, cm^{2}$)

Similar Questions

The surface area of a sphere is $2464 \, cm^2$. Find its diameter in $cm$.

The radius of a spherical balloon increases from $7 \, cm$ to $14 \, cm$ as air is being pumped into it. Find the ratio of surface areas of the balloon in the two cases.

Find the surface area of a sphere of radius $5.6 \, cm$.
Assume $\pi = \frac{22}{7}$. (in $, cm^{2}$)

Find the surface area of a sphere with a diameter of $21\, cm$ (in $cm^2$).

Find the surface area of a sphere of radius $7 \, cm$. (in $, cm^{2}$)

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Find the surface area of a sphere of radius $10.5 \, cm$.Assume $\pi = \frac{22}{7}$. (in $, cm^{2}$)