Question

he diameter of a circular plate is 28 cm and its thickness is 2.5 cm . 20 such plates are stacked vertically to

make a cylinder. Find the total surface area of this cylinder.​

Answer 1

Answer:

My best answer is,

r = 14cm and h = 2.5 x 20 = 50 cm

Total surface area of cylinder = 2πr (h+r) sq.units

= 2 x 22/7 x 14 ( 50+14) cm²

= 44 x2 x 64 cm²

= 88 x 64 cm²

= 5632 cm²

I hope it will help you.