let each side of one square be x cm
let the other have side length y cm
so we know:
x^2 + y^2 = 100 ***
and
4x + 4y = 50
2x+2y=25 **
y = (25-2x)/2
subbing the 2nd part into the first:
x^2 + (625 - 100x + 4x^2)/4 = 100
times 4
4x^2 + 625 - 100x + 4x^2 = 400
8x^2 - 100x + 225 = 0
by the formula, I got
x = appr 9.557
sub that into ** to get y, and go from there
A wire of length 50cm is cut into two parts and each part is bent to form a square. If the total area of the two square is 100cm², find the perimeter of each square.
1 answer
1 answer