The perimeter of a rectangle is 28.8 centimeters. the lenght of the rectangle is twice as long as its width. find the length and width of the rectangle

The formula of a perimeter of rectangle: P = 2l + 2w.

We have:

P = 28.8 cm

l = 2w

Substitute:

2(2w) + 2w = 28.8

4w + 2w = 28.8

6w = 28.8    |:6

w = 4.8 cm

l = 2w = 2(4.8) = 9.6 cm

+25 = x

step-by-step explanation:

here x is the hypotenuse of a right triangle whose legs are 7 and 24.   by the pythagorean theorem, 7² + 24² must equal x²:

x² = 49 + 576 = 625.   thus, x = +√625 = +25 = x