Question

Diameter of a Cylinder is 2r cm and its height is h cm then its curved surface area

will be ………………… cm².

a) 4πr 2

b) 2 πrh c) 4 πrh d) πr 2
plz ans me ​

Answer 1

1760Cm²

$\huge{\fcolorbox{blue}{blue} {\fcolorbox{orange}{orange} {\fcolorbox{yellow}{yellow}{solution}}}}$

Given:-

Diameter of cylinder ( D ) = 28Cm.

Radius of cylinder ( R )

$= \frac{d}{2} = 14cm$

Height of cylinder ( H ) = 20Cm.

As we know that, curved surface area of cylinder is given as-

$csa = 2\pi{rh} = 2 \times \frac{22}{7} \times 14 \times 20 = 1760cm {}^{2}$

Answer 2

Answer:

Step-by-step explanation:

option-b

2πrh