Question

the radius of a cone is 7 cm and area of the curved surfaces is 176 cm². Find the slant height

Answer 1

RADIUS OF A CONE = 7 CM
C S A OF CONE = 176 cm ^ 2
πrl = 176
22/7 × 7 × l = 176
22 × l = 176
l = 176/22
l = 8 cm.....



thank you...... # mr. king

Answer 2

The slant height of cone is 8 cm.

Step-by-step explanation:

The curved surface area of cone is

$A=\pi rl$

where, r is radius and l is slant height.

It is given that the radius of a cone is 7 cm and area of the curved surfaces is 176 cm².

r = 7cm

A = 176 cm².

Substitute r=7, A=176 and $\pi=\frac{22}{7}$ in the above formula.

$176=(\frac{22}{7})(7)l$

$176=22l$

Divide both sides by 22.

$\dfrac{176}{22}=l$

$8=l$

Therefore, the slant height of cone is 8 cm.

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