Math, asked by saishivani17, 10 months ago

find the perimeter of an isosceles right triangle having an area of 200cm square​

Answers

Answered by Anonymous
1

Answer:

Step-by-step explanation:

Solution -

Area of a triangle = 1/2 * b * h

As it is an isosceles right triangle, b = h 

Therefore, Area = 1/2 * b * b = 1/2 * b^2

200 = 1/2 * b^2

b^2 = 400

b = 20 cm

Therefore, b = h = 20 cm

Perimeter of a triangle = b + h + sqrt (b^2 + h^2)

                                  

                                      = 20 + 20 + sqrt ((20)^2 + (20)^2)

     

                                      = 40 + sqrt(400 + 400)

                       

                                      = 40 + sqrt(800)

         

                                      = 40 + 20 sqrt 2 cm

                                

                                      = 40 + 20 * 1.414     (as sqrt 2 = 1.414)

                  

                                      = 68.28 cm

Answer - Perimeter of an isosceles right triangle = 68.28 cm

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