Question

on for the perimeter of the square of diagonal 20 cm is 57 cm (6) 56 cm (c) 55 cm (d) 50 cm 5. A swimming pool, 30 m long, has a depth of water of 0-80 m at one end and 2-4 m at the other end area of the vertical cross-section of the pool along the length is (a) 24 m2 (6) 19.2 m2 (c) 72 m2 Lot 48 m2 6. If the sides of a triangle are 7 cm, 8 cm and 5 cm, then its area is​

Answer 1

Answer:

what the hell yar ,,itna bada math koi deta hain kay?

Answer 2

Answer:

We know that length of diagonal of square = √2 a , where a is length of side of square.

and perimeter of square = 4a.

given : length of diagonal of square

√2a= 20 cm

a = 10√2 cm

Now perimeter of a square = 4a

4*10√2 =56.568

nearly equal to 57.