2020 · Q84
Areas of two squares are in the ratio m²:n⁴. What is the ratio of their perimeters?
Elementary MathematicsMensuration
- Am:n
- Bn:m
- Cm:n²
- Dm²:n
Explanation
Areas m^2:n^4 give sides m:n^2, hence perimeters m:n^2. Hence option (C). Perimeter scales linearly with side, so the ratio is sqrt(m^2):sqrt(n^4) = m:n^2.