Question

What is the area of the base of a cylinder if the raius is 12dm and the height is 15 dm?

Answer 1

`"area "=144pi~~452.4" to 1 dec. place"`

Explanation:

`"the area of the circular base of a cylinder is"`

`• " area "=pir^2larrcolor(blue)"r is the radius"`

`rArr"area "=pixx12^2=144pilarrcolor(red)"exact value"`

`color(white)(xxxxxxxxxxxxxxx)~~452.4" dm"^2`

`"the height given would be required to calculate volume"`

`•color(white)(x)V_(color(red)"cylinder")=" area of base"xx"height"`

`rArr"volume "=144pixx15=2160pi" dm"^3`