Suppose a frustum has radii 7 cm and 7 cm (equal) and height 10 cm.
What is its volume, in $cm^{3}$ (use π = $\frac{22}{7}$ )? Note what shape this actually is.

Question

Suppose a frustum has radii 7 cm and 7 cm (equal) and height 10 cm. What is its volume, in cm^3 (use π = 22/7)? Note what shape this actually is.

Accepted Answer

1540. Equal radii means it is a cylinder. V = π*r^2*h = 22/7*49*10 = 22*7*10 = 1540 cm^3. (Frustum formula gives the same: 1/3*22/7*10*(49 + 49 + 49) = 1/3*22/7*10*147 = 22/7*490 = 1540.)

Suppose a frustum has radii 7 cm and 7 cm (equal) and height 10 cm.
What is its volume, in $cm^{3}$ (use π = $\frac{22}{7}$ )? Note what shape this actually is.

Step-by-Step Solution

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More Class 10 Frustum of a Cone practice

Suppose a frustum has radii 7 cm and 7 cm (equal) and height 10 cm.What is its volume, in cm3 (use π = 722​)? Note what shape this actually is.

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 10 Frustum of a Cone practice

Suppose a frustum has radii 7 cm and 7 cm (equal) and height 10 cm.
What is its volume, in $cm^{3}$ (use π = $\frac{22}{7}$ )? Note what shape this actually is.