Question

PLS Answer my question fast
I'll mark you as BRAINLIEST!!​

Answer 1

Answer:

20+10$\sqrt{2}$ cm

Step-by-step explanation:

According to Pythagoras Theorem

(Leg1)² + (Leg2)² = (Hypotenuse)²

=> x² + x² = (10$\sqrt{2}$)² (Both sides are x because its an isosceles triangle)

=> 2x² = 200

=> x² = 100

=> x = 10 cm

Perimeter = Sum of all sides

= x + x + 10$\sqrt{2}$

= 10 + 10 + 10$\sqrt{2}$

= 20 + 10$\sqrt{2}$ cm

Hope that helped