Question

a hemisphereical bowl is made up of the plastic sheet 0.25 CM thick the inside radius of the ball is 5 cm find the value of the plastic used in making the ball ​

Answer 1

Answer:

173.25

int radius=5 cm

ext radius=5+0.25=5.25

area of plastic used = 2πr^2

= 2×22÷7×5.25×5.25

=1732500÷10000

= 173.25