Question

20. Find the length of the diagonal of a square whose area 128 cm^2 Also, find its perimeter.​

Answer 1

Step-by-step explanation:

area of sq. is also d1 d2/2

d1 d2/2=128

d1 d1 =256

d1=16

now is one side will $2 \sqrt{2}$

perimeter will be $</p><p>8 \sqrt{2}$