Question

find the area and perimeter of a square whose diagonal is 10cm​

Answer 1

Answer:

Step-by-step explanation:

We know AREA=1/2 (diagonal)^2 

then,area=1/2(10)^2

             =1/2  X 100 =50cm^2

perimeter of a square=2 root 2 X diagonal 

                               =2 root 2 X 10

                               =20 root 2 cm