Question

The curved surface area of a cone is 4070cm and diameter is 7 cm what is the slant height of cone

Answer 1

hiii friend
here is your answer
curved surface are of a cone⬇
let, slant height be "l"

$2\pi {r}^{2} \times l$
so,
$2\pi {r}^{2} \times l \\ 4070 = 2\pi \times {r}^{2} \times l \\ 2035 = \frac{22}{7} \times \frac{7}{2} \times \frac{7}{2} \times l \\ \\ l= 52.85$

so the length of slanted height =52.85cm


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