Question

Find the radius of cone whose CSA is 1884.4 m squareand slant height is 12cm.

Answer 1

I hope it may help you
plz refer the 2nd last step

Answer 2

GIVEN :

• CURVED SURFACE AREA (CSA) = 1884.4 m²
• SLANT HEIGHT (l) =12 cm

TO FIND :

• RADIUS OF CONE

SOLUTION :

SLANT HEIGHT (l) = 12 cm = 0.12 m

CSA OF CONE = 1884.4 m²

$= > \pi rl = 1884.4 \\ \\ = > \frac{22 \times 0.12 \times r}{7} = 1884.4 \\ \\ = > r = \frac{1884.4 \times 7}{22 \times 0.12} = 4996.5 \: m \\ \\ = 49.96 \: cm$

HOPE IT HELPS !!!!