Question

In the following figure, the area of the total cloth required is $80c{m}^2$ and the area of the yellow cloth required is $60c{m}^2$. If the red coloured parts are congruent with each other and the blue cloth is $\frac{1}{{10}^{th}}$ of the yellow cloth, what is the area of the red cloth required?

• A. 6 cm²
• B. 8 cm²
• C. 12 cm²
• D. 14 cm²

Answer 1

The correct option is D

14 cm²

Area of the blue cloth = $\frac{1}{10}of60c{m}^2=6c{m}^2$

Area of red cloth + Area of blue cloth = $20c{m}^2$

Area of red cloth = $(20-6)c{m}^2=14c{m}^2$