Krishna
0

Step 1: Recall the formulas of the volume and surface area of sphere

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

Surface area of sphere = 4 \pi r^2

Step 2: Calculate the surface area of sphere

Surface area of sphere = 4 \pi r^2

= 4 \pi (2.1)^2

= 4 (3.14) (\frac{21}{10} * \frac{21}{10})

= \frac{1386}{25}

= 55.44 cm^2

Step 3: Find the volume of sphere

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

= \frac{4}{3} (3.14) (2.1)^3

= 38.808 cm^3