Question

the radius of a sphere is 5 cm,if its diameter is increased by 20%.what will its new radius

Answer 1

Answer:

Step-by-step explanation:

old radius = 5 cm

therefore, diameter = 10 cm

diameter increased by 20 percent

therefore, diameter increased = 20 percent of 10 cm

                                                   = 20/100 x 10

                                                   = 2 cm

new diameter = 10 + 2

                        =  12 cm

therefore new radius = 6 cm