Top circumference is 130cm, bottom circumference is 89cm and hight is 280cm. Find the volume
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★Heya★
The given figure is frustum.
Volume of frustum = πh/3 { r² + r R + R² }
Here r is radius of bottom circle, R is radius of Top circle And h is height of frustum.
=>
Circumference of Top circle = 2πR
And
Circumference of bottom circle = 2πr
ACCORDING TO THE QUESTION
2πR = 130
R = 20.70Cm
2πr = 89
r = 14.17cm
=>
Volume of frustum =
(π×280)/3 { (14.17)² + ( 20.70)² + (14.17×20.70)}
=>
volume of frustum = 270300.955cm³
The given figure is frustum.
Volume of frustum = πh/3 { r² + r R + R² }
Here r is radius of bottom circle, R is radius of Top circle And h is height of frustum.
=>
Circumference of Top circle = 2πR
And
Circumference of bottom circle = 2πr
ACCORDING TO THE QUESTION
2πR = 130
R = 20.70Cm
2πr = 89
r = 14.17cm
=>
Volume of frustum =
(π×280)/3 { (14.17)² + ( 20.70)² + (14.17×20.70)}
=>
volume of frustum = 270300.955cm³
How R =20.70cm comes pls explane
And also r=14.17cm
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