Question

The area of canvas required to construct a cone of height 24 m and base radius 7 m is

• A. $500m^2$
• B. $520m^2$
• C. $550m^2$
• D. none of these

Answer 1

The correct option is C $550m^2$

Consider the given equation,

Consider the given equation,

$r=7$

$h=24$

Req. Canvas= CSA of cone $=\pi rl$

Also, $l=\sqrt{{24}^2+7^2}$

$=\sqrt{576+49}=\sqrt{625}$

$l=25$m

Now,

Req. Canvas$=\pi \times 7\times 25$

$=22\times 25$

$=550$m

Area req. of canvas is $550m$