Question

Find the total surface area of cylinder whose diameter and height are 14 cm and 20 cm respectively.

Answer 1

given: diameter of cylinder= 14cm

so, radius of cylinder =14/2cm

=7cm

and height of cylinder=20cm

We know that

total surface area of cylinder =2πr(r+h)

=2×22/7×7(7+20)

=2×22(27)

=1187cm²