The diagram shows a cone- The radius of its base is 2-8 cm and its slant height is 8cm- Find the area of its curved surface left- pi - dfrac-22-7- right -70-4 cm-280-4 cm-290-4 cm-2None of these

Question

Toppr Admin · Accepted Answer

Given- radius r-2-8cmand slant height l-8cm-Then-curved surface area-xA0-x3C0-rl-227-xD7-2-8-xD7-8-70-4cm2-Therefore- option A is correct-

The diagram shows a cone. The radius of its base is $2.8$ cm and its slant height is $8$ cm. Find the area of its curved surface $(π = \frac{22}{7})$ .

$70.4$ cm $^{2}$
$80.4$ cm $^{2}$
$90.4$ cm $^{2}$
None of these

Given, radius $r = 2.8 c m$
and slant height $l = 8 c m$ .

Then,
curved surface area $= π r l$
$= \frac{22}{7} \times 2.8 \times 8 = 70.4 c m^{2}$ .

Therefore, option $A$ is correct.

The diagram shows a cone. The radius of its base is 2.8 cm and its slant height is 8cm. Find the area of its curved surface (π=227).70.4 cm280.4 cm290.4 cm2None of these

Given, radius r=2.8cmand slant height l=8cm.Then,curved surface area =πrl=227×2.8×8=70.4cm2.Therefore, option A is correct.

The diagram shows a cone. The radius of its base is $2.8$ cm and its slant height is $8$ cm. Find the area of its curved surface $(π = \frac{22}{7})$ .

$70.4$ cm $^{2}$
$80.4$ cm $^{2}$
$90.4$ cm $^{2}$
None of these

Given, radius $r = 2.8 c m$
and slant height $l = 8 c m$ .

Then,
curved surface area $= π r l$
$= \frac{22}{7} \times 2.8 \times 8 = 70.4 c m^{2}$ .

Therefore, option $A$ is correct.