1.

Height of a cone is 40cm. Slant height is 41cm.a. Find diameter of its base,b. Find volume

Answer»

a. r2 + I2 - h2

r2 = 412 - 402 = 81

r = 9

Diameter = 18 cm

b. Volume = \(\frac{1}{3}\pi r^2h=\frac{1}{3}\pi\times9^2\times40\)

= 3394.3 cm3



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