Question

2. A congruent side of an isosceles right angled triangle is 7 cm ,Find
its perimetre​

Answer 1

Answer:

Perimeter of right angle isosceles triangle = 7(2+√2)

Step-by-step explanation:

Let the other side of triangle is x cm

Then in isosceles right angle triangle two congruent sides are 7 cm

x² = (7)² + (7)²

$\: \longrightarrow {x}^{2} = 49 + 49$

$\: \longrightarrow {x}^{2} = 198$

$\: \longrightarrow \: x = 7 \sqrt{2}$

Then perimeter of right angle isosceles

triangle = 7+7+7√2

= 14+7√2

= 7(2+√2) Ans

Answer 2

Answer:

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