Two similar logos have areas $81\text{ cm}^2$ and $144\text{ cm}^2$. The smaller logo has width

Question

Two similar logos have areas $81\text{ cm}^2$ and $144\text{ cm}^2$. The smaller logo has width 9 cm and perimeter 36 cm. Find the width of the larger logo.[2] Find its perimeter.[1]

Accepted Answer

(a) 12 cm. (b) 48 cm.

Lengths from an area ratio

Lengths from an area ratio

Solution:

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