Question

the area of rectangle is 168cm so fimd the area of square​

Answer 1

Step-by-step explanation:

area=168 cm²

diagonal=25 cm

let length of the rectangle is x

bredth is y

then use Pythagorean theorem

x²+y²=25²

625=x²+y²

y²=625-x²...(1)

area(168)=x*y

168²=x² * y²

28224= x² * y²

we know y²=625-x²

then

x²(625-x²)28224

multiply the whole equation with (-1)

then

we want to write this formula in (a-b)² type..

let a=x²,,,2ab=625x²

so we will get 2b=625

b=312.5

add (312.5) in two sides of the formula