If the radii of the circular ends of a frustum which is 45 cm high are

1.	If the radii of the circular ends of a frustum which is 45 cm high are 28 cm and 7 cm. Find thevolume of the frustum.
Answer» radius 1 = 28 CM and radius 2= 7 cm Height = 45 cm volume of frustum = 1/3 * 22/7 h {r 1^2 +r 2 ^2 + r 1 r 2 } = 1/3 * 22/7 * 45 {(28)^2 + (7)^2 + 287] = 22/7 15 {784 + 49 + 196 } = 22/7 * 15 {1029] = 22 * 15 * 147 = 48510 cm^2 therefore the volume of the frustum is 48510.

If the radii of the circular ends of a frustum which is 45 cm high are 28 cm and 7 cm. Find thevolume of the frustum.

Answer»

radius 1 = 28 CM and radius 2= 7 cm

Height = 45 cm

volume of frustum = 1/3 * 22/7 *h {r 1^2 +r 2 ^2 + r 1 * r 2 }

= 1/3 * 22/7 * 45 {(28)^2 + (7)^2 + 28*7]

= 22/7 * 15 {784 + 49 + 196 }

= 22/7 * 15 {1029]

= 22 * 15 * 147

= 48510 cm^2

therefore the volume of the frustum is 48510.

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If the radii of the circular ends of a frustum which is 45 cm high are 28 cm and 7 cm. Find thevolume of the frustum.​

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If the radii of the circular ends of a frustum which is 45 cm high are 28 cm and 7 cm. Find thevolume of the frustum.