Question

the diameter of cylinder is 2.8 cm and the height is 40 cm find the volume of cylinder

Answer 1

diameter = 2.8cm
radius = 2.8÷2=1.4
height = 40cm

theirfore,, according to question
volume of cylinder = pie×radius square ×height
3.14×1.4square×40
246.17cm square ..

theirfore,, the requried volume= 246.17cm square.
.

Answer 2

Volume of Cylinder=
$\pi {r}^{2}h$
22/7*1.4*1.4*40
=246.4
${cm}^{3}$