Question

diameter of the base of a right circular cylinder is 28 CM its height is 21 cm find its total surface area and volume​

Answer 1

it is total surface area

Answer 2

The total surface area of the right circular cylinder is 2464 cm².

The volume of the right circular cylinder is 12936 cm³.

Step-by-step explanation:

Given : Diameter of the base of a right circular cylinder is 28 CM its height is 21 cm.

To find : Its total surface area and volume​ ?

Solution :

Diameter of the base of a right circular cylinder is 28 cm.

Radius of the base of a right circular cylinder is $\frac{28}{2}=14\ cm$.

Height is 21 cm.

The total surface area of the right circular cylinder is

$TSA=2\pi rh+\pi r^2$

$TSA=2\times \frac{22}{7}\times 14\times 21+\frac{22}{7}\times 14^2$

$TSA=1848+616$

$TSA=2464\ cm^2$

The volume of the right circular cylinder is

$V=\pi r^2 h$

$V=\frac{22}{7}\times 14^2\times 21$

$V=12936\ cm^3$

#Learn more

1. Volume of a cylinder is 448pie and height 7 cm. Find its lateral (curved) surface area and total surface area.

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