Math, asked by chirag8874695183, 1 year ago

A right circular has curved surface area of 1320cm square and the radius of its base is 10.5cm.find the height and volume of the cyclinder

Answers

Answered by Anonymous
0
Hey!

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=>CSA of cylinder =2πrh

=>1320=2×22/7×10.5×h

=>1320×7/22×2×10.5 =h

=>h=700

=>Volume of cylinder=πr²h

=22/7×10.5×10.5×700

=242550cm³

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Regards :)

Yash Raj ✌
Answered by Anonymous
6
Hi there !!
Here's your answer


Given,
Curved surface area = 1320cm²
Radius of base = 10.5cm = 105/10cm = 21/2 cm

Let the height be 'h'

Curved surface area = 2πrh

1320 = 2 \times  \frac{22}{7}  \times  \frac{21}{2}  \times h

 \frac{1320 \times 7 \times 2}{2  \times 22 \times 21}  = h

h = 20

Thus,
the height is 20cm


Volume of cylinder = πr²h

 =  \frac{22}{7}  \times  \frac{21}{2}  \times  \frac{21}{2}  \times 20cm
= 6930cm³


Thus,
the height is 20cm and the volume is 6930cm³

Anonymous: :-)
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