Find the volume of a sphere of radius 2.1 , c | vedclass

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

Question

(C) For a given sphere,the radius $(r) = 2.1 \, cm = \frac{21}{10} \, cm$.The formula for the volume of a sphere is $V = \frac{4}{3} \pi r^3$.Substitu

Vedclass · Accepted Answer

$38.808$

Vedclass · Answer

(C) For a given sphere,the radius $(r) = 2.1 \, cm = \frac{21}{10} \, cm$.The formula for the volume of a sphere is $V = \frac{4}{3} \pi r^3$.Substituting the values:$V = \frac{4}{3} 	imes \frac{22}{7} 	imes \left(\frac{21}{10}ight)^3 \, cm^3$$V = \frac{4}{3} 	imes \frac{22}{7} 	imes \frac{21}{10} 	imes \frac{21}{10} 	imes \frac{21}{10} \, cm^3$$V = 4 	imes 22 	imes \frac{1}{1} 	imes \frac{1}{1} 	imes \frac{0.1}{1} 	imes 2.1 	imes 2.1 \, cm^3$ (simplifying $3 	imes 7 = 21$ with one $21$ in the numerator)$V = 88 	imes 0.1 	imes 4.41 \, cm^3$$V = 8.8 	imes 4.41 \, cm^3 = 38.808 \, cm^3$.

Find the volume of a sphere of radius $2.1 \, cm$. (in $cm^3$)

Similar Questions

$A$ metallic ball of radius $9 \,cm$ is melted and recast into three metallic balls. If the radii of two balls are $1 \,cm$ and $6 \,cm$,find the radius of the third ball (in $cm$).

Lateral surface area of a cube $= \ldots \ldots \ldots$

The total surface area of a cube is $96 \, cm^2$. The volume of the cube is (in $cm^3$)

Total surface area of a cylinder is equal to:

The radius and slant height of a conical vessel are $35 \,cm$ and $91 \,cm$ respectively. What is its capacity in litres (in $.8$)?

Vedclass Test Series

Exam Paper Generator

Online Exam Module