Question

A solid sphere of diameter 4.9 cm is cut into two equal halves. What will be the increase in its total surface area?

Q: Answer-A solid sphere of diameter 4.9 cm is cut into two equal halves. What will be the increase in its tot...

Given Diameter 4.9 cm Radius 4.92 2.45 cm Total surface area of sphere 4 227 2.45 2.45 75.46 cm2 if sphere is cut into two equal halves, then, it becomes two hemispheres of radius 2.45 cm. Total surface area of the 2 equal hemi spheres 2 3r2 2 3 227 2.45 2.45 113.19 cm2 The increase in total surface area 113.19 75.46 37.73 cm2