Question

find the volume and surface area of sphere of radius 4.2cm​

Answer 1

Answer:

• volume of sphere = 4/3pie r^3

4/3×22/7×4.2×4.2×4.2

4/3×22/7×42/10×42/10×42/10

1764/125

14.1cm

surface area of sphere= 4 pie r^2

4×22/7×4.2×4.2

4×22/7×42/10×42/10

10.08cm

Answer 2

The volume and surface area of sphere are 221.76 sq.cm. and 310.464 cubic cm

Step-by-step explanation:

Radius of sphere = 4.2 cm

Total surface area of sphere =$4 \pi r^2$

                                               = $4 \times \frac{22}{7} \times (4.2)^2$

                                               = $221.76 cm^2$

Volume of sphere = $\frac{4}{3} \pi r^3$

Volume of sphere =$\frac{4}{3} \times \frac{22}{7} \times 4.2^3$

Volume of sphere =$310.464 cm^3$

Hence The volume and surface area of sphere are 221.76 sq.cm. and 310.464 cubic cm

#Learn more:

A meterlloc sphere of radius 4.2cm is melted and recast into the shape of a cylinder of radius 6cm

Find the height​

https://brainly.in/question/12969141