A frustum-shaped jar has radii 9 cm and 6 cm and height 8 cm.
Find the slant height, then the curved surface area, in $cm^{2}$ (use π = $\frac{22}{7}$ ).

Question

A frustum-shaped jar has radii 9 cm and 6 cm and height 8 cm. Find the slant height, then the curved surface area, in cm^2 (use π = 22/7).

Accepted Answer

402.79. l = √8^2 + (9 - 6)^2 = √64 + 9 = √73 = 8.544 cm. CSA = 22/7*8.544*(9 + 6) = 22/7*8.544*15 = 22/7*128.16 = 402.79 cm^2.

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