Question 61

ΔABC is similar to ΔDEF. Length of AB is 18 cm and length of the corresponding side DE is 10 cm. What is the ratio of Perimeter of ΔABC : Perimeter of ΔDEF?

Solution

It is given that ΔABC $$\sim$$ ΔDEF

Also, length of AB = 18 cm and length of the corresponding side DE = 10 cm

=> Ratio of Perimeter of ΔABC : Perimeter of ΔDEF = Ratio of corresponding sides = AB : DE

= $$\frac{18}{10} = \frac{9}{5}$$

$$\therefore$$ The required ratio is 9 : 5

=> Ans - (B)

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