the circumference of the base of a cone is 44 cm and the slant height is 25 CM the volume of the cone is
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circumference of the base of the cone is 44 cm.
so,
2pi r = 44
2×22/7×r = 44
r = (44×7)÷(22×2)
[ r = 7 ]
■ Volume of the cone = 1/3 pi r2 h
But,
height = square root of (slant height square) -- (square of radius)
=625-49
=576
root over of 576 = 24
hence volume of the cone = 1/3 pi r2h
=1/3×22/7×7×7×24
=1232cm2
so,
2pi r = 44
2×22/7×r = 44
r = (44×7)÷(22×2)
[ r = 7 ]
■ Volume of the cone = 1/3 pi r2 h
But,
height = square root of (slant height square) -- (square of radius)
=625-49
=576
root over of 576 = 24
hence volume of the cone = 1/3 pi r2h
=1/3×22/7×7×7×24
=1232cm2
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