Question 72

Find the perimeter of a right angle triangle whose sides have sizes of 5 cm and 12 cm.

Solution

In the right angled triangle, lengths of the sides are 12 cm and 5 cm

Hypotenuse$$^2$$ = 12$$^2$$ + 5$$^2$$

$$\Rightarrow$$ Hypotenuse$$^2$$ = 144 + 25

$$\Rightarrow$$ Hypotenuse$$^2$$ = 169

$$\Rightarrow$$ Hypotenuse = 13 cm

$$\therefore\ $$Perimeter of the right angled triangle = 13 + 12 + 5 = 30 cm

Hence, the correct answer is Option B

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