Question

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

Answer 1

Answer:

AREA OF A SQUARE=1/2 (diagonal)²

area=1/2(10)²

       =1/2  X 100 =50cm²

perimeter of a square=2√2 X diagonal  

                               =2√2 X 10

                               =20√2 cm

HOPE IT HELPS

Answer 2

Answer:

50cm²

Step-by-step explanation:

A=a²

d=√2a

A=1/2d²

=1/2×10²

=50cm²

P=4a

P=2√2d

=2×√2×10

=2×14.1421356

=28.2842712

hope it helps