Question

The radius and height of a cylinder is in ratio 7:3. volume of cylinder is 12475 cm3 .find the radius and height of the cylinder. copied answer allowed ( ꈍᴗꈍ)​

Answer 1

Answer:

hope it helps you bye army

Answer 2

Answer:

Let the number be 7x, 3x

Volume = pi r square h

12474=22/7×7x×7x×3x

12474=22×x×7x×3x

12474=22×21x cube

21x^3= 12474/22

21x^3=567

x^3= 27

x=cube root of 27 is 3cm .

Therefore r=7x

r=7×3

r=21

h=3x

h=3×3

h=9

So curved SA =2pi rh

=2×22/7×21×9

= 1188cm^2

TSA= 2pi rh ×2pi r^2

=1188×44/63

= 1188×2772

= 3960 cm ^2.

Hope it helps u mate

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