Question

The diagonal of square is 15 cm find its area and perimeter.​

Answer 1

Answer:

a=10.6 , p=42.4

Step-by-step explanation:

Diagonal of the square =15

a²+a²=15²

2a²=225

a²=112.5

a=10.6(side of square)

Perimeter of a square =4 a =4×10.6

                                              =42.4

   Hope it helped you ........... mark as brainliest

Answer 2

Here is your answer ☺️☺️❤️❤️

Let each side of square = x cm

Diagonal of square= AB =BD= 15 cm

In right triangle ABC

AB^2 + BC ^2 = AC^ 2

x^2 + x^2 = 15 ^2

2x^2 = 225

or x^2 = 225/2

Area of square = 225/2 sq. cm.

112.5 sq. cm.

Hope this helps you ☺️☺️❤️:-P