Q1.1. Find the volume of the right circular cone with
(a) radius 6 cm, height 7 cm
(b) radius 3.5 cm, height 12 cm
Answers
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Step-by-step explanation:
Given
(a) radius 6 cm, height 7 cm
(b) radius 3.5 cm, height 12 cm
To find
we have to find the volume of cylinder
SOLUTION
Volume of cone = πr²h÷3
(a) radius = 6cm , height = 7cm
Volume of cone = π*6²*7÷3
= 22/7*36*7÷3
= 22*36÷3
= 792/3
= 264cm³
(b) radius = 3.5cm, height = 12cm
Volume of cone = π*(3.5)²*12÷3
= 22/7*12.25*12/3
= 3.14*12.25*4
=38.46*4
=153.84cm³(approx)
More information:
πr²h/3
where , r is the radius and h is the height of the cone .
A cone having slant height and height .
height is the distance from the base of the cone to its vertex.
slant height = √ r² + h²
Total surface of cone = πrl + πr²
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