Question

the highest of highest circular cone is 12cm and its volume is 100πcm³find the lenght of the radius of the once​

Answer 1

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

Given:-

Height of a right circular cone,h = 12 cm

Volume of circular cone , V = 100 πcm^2

To find out:-

Find the slant height (l).

Solution:-

We know that,

Volume of cone = 1/3 x π ×r^2xh

= 100m = 1/3 x π x r^2 x 12

= 100m = 12/3 × π × r^2

= 100m = 4 πx r^2

= r^2=100π/4π

= r^2=25

= r=√25

= r=5cm

Now,

By using Pythagoras therome:

l^2=r^2+h^2

= l^2=(5)^2+(12)^2

= l^2=25+144

= l^2=169

=> |=√169

= l=13cm

Hence,the slant height of a right circular cone is 13 cm.