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
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Answered by
2
Hey there
Given
C.S.A of a cylinder = 2πrh
=>1320 = 2×22/7×10.5×10.5×h
=> 1320×7 = h
= 22×2×1.5
h = 700 cm
Vol. of cylinder = π r2h
= 22/7×10.5×10.5×700
= 242550 cm3
Given
C.S.A of a cylinder = 2πrh
=>1320 = 2×22/7×10.5×10.5×h
=> 1320×7 = h
= 22×2×1.5
h = 700 cm
Vol. of cylinder = π r2h
= 22/7×10.5×10.5×700
= 242550 cm3
ayush835:
You are in which class
10
bro.. there is no r^2 in CSA!
you habe done it wrong
please edit!
no option for editing i tried it
ohh!
Answered by
1
hey!!
here is your answer >>>
Formula for surface area of a right circular cylinder is :
=>>> 2(π)(r)(h)
π = 22/7
r = radius
h = height!
C.S.A = 1320!
Radius is 10.5 cm!
so now, Let us substitute these values into the equation!
which is,
2(22/17)(10.5)(h) = 1320
=> (22/7)(10.5)(h) = 1320/2
=> (22/7)(10.5)(h) = 660
=> (22)(1.5)(h) = 660
=> (1.5)(h) = 660/22
=> (1.5)(h) = 30
=> h = 30/1.5
=> h = 20cm.
Height is 20cm!
We will have to find the volume now,
>>>
Formula is (π)(r)(r)(h)
=> (22/7)(10.5)(10.5)(20)
=> (22/7)(110.25)(20)
=> (22)(110.25)(20)/7
=> 48510/7
=> 6930 cubic centimeters!
Hope my answer helps you!
here is your answer >>>
Formula for surface area of a right circular cylinder is :
=>>> 2(π)(r)(h)
π = 22/7
r = radius
h = height!
C.S.A = 1320!
Radius is 10.5 cm!
so now, Let us substitute these values into the equation!
which is,
2(22/17)(10.5)(h) = 1320
=> (22/7)(10.5)(h) = 1320/2
=> (22/7)(10.5)(h) = 660
=> (22)(1.5)(h) = 660
=> (1.5)(h) = 660/22
=> (1.5)(h) = 30
=> h = 30/1.5
=> h = 20cm.
Height is 20cm!
We will have to find the volume now,
>>>
Formula is (π)(r)(r)(h)
=> (22/7)(10.5)(10.5)(20)
=> (22/7)(110.25)(20)
=> (22)(110.25)(20)/7
=> 48510/7
=> 6930 cubic centimeters!
Hope my answer helps you!
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