Question

the radius of a cylinder is 7cm if it volume is 2002cm². Find its height and CSA ​

Answer 1

Answer:

• Height = 13 cm
• Curved Surface Area = 572 cm²

Step-by-step explanation:

Volume = 2002 cm³

Radius = 7cm

Volume = $\pi$r²h =  $\pi$(7)²h = 2002

Height = 2002/49$\pi$ = (2002*7)/(49*22) = 13cm

Now, Curved Surface Area = 2$\pi$ rh

= 2 * (22/7)* 7 * 13

= 572 cm²

Answer 2

Answer:

VOLUME OF CYLINDER=2002 CM^3

HEIGHT OF CYLINDER = ?

RADIUS OF CYLINDER = 7 CM

V.OF CYLINDER =PIE R^2 H

2002=22/7×7×7×H

2002=7 WILL CANCEL OUT THEN

2002=22×7×H

2002=154×H

2002/154=H

H=13 CM

THEN THE TOTAL SURFACE AREA OF CYLINDER = 2PIE R (H+R)

= 2×22/7×7 (13+7)

=THEN 7 WILL CANCEL OUT

=22×2 (13+7)

=44×20

= 880 CM^2

Step-by-step explanation: