Question

find the curved surface area ofa a cylinder of radius 21cm and height 28 cm​

Answer 1

Question⤵

find the curved surface area of a cylinder of radius 21cm and height 28 cm.

Answer⤵

GiVen : - A cylinder with radius 21 cm and height 28cm

FiNd : curved surface area of cylinder

SOlutiOn :

curved surface area of cylinder = 2πrh

= 2×22/7×21cm×28cm

= 44 × 3cm × 28cm

= 44 × 84cm

Curved surface area of cylinder =

$3696cm ^{2}$

your answer is 3696cm*2

☸hope it helps you friend☸☺

Answer 2

Step-by-step explanation:

In a cylinder

radius = 21 cm

height = 28 cm

C.S.A of cylinder 2πrh

=2×22/7×21×28

=3696cm ^2

and T.S.A of cylinder = 2π r (r+h )

= 2×22/7×21(21+28)

=132×49

=6468cm ^2