Question

$\triangle ABC \sim \triangle DEF$ and their areas are respectively $81 \text{ cm}^2 \quad \text{and} \quad 225 \text{ cm}^2$; if $EF = 5 cm$, then $BC=$

• A. 3 cm
• B. 9 cm
• C. 10 cm
• D. 5 cm

Answer 1

Answer: (A)

3 cm

Answer 2

The correct option is (A): 3 cm