EM-757

Composite solids

E Math · Secondary 3 · Hard · Composite solids

Two similar solids have volumes in the ratio

27:8

. The surface area of the smaller solid is

40\text{ cm}^2

. Find the surface area of the larger solid.

$90\text{ cm}^2$
$67.5\text{ cm}^2$
$60\text{ cm}^2$
$22.2\text{ cm}^2$

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