Question

If two perpendicular sides of a right-angled
triangle are 5 cm and 12 cm, its perimeter is :​

Answer 1

Step-by-step explanation:

we know perimeter of traingle = 2(length+width)

= 2(5+12)

=34 cm

Answer 2

Sides are 5cm and 12cm

let the third side be x,

By Pythagoras theorem,

5sq + 12 sq = x sq

x sq = 144 + 25

x =✓169

x = 13 cm

Therefore,

the perimeter is 5 + 12 + 13

= 30 cm

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