Braelyn Is writing including to officiate rectangle with a width equal to half the length she knows the perimeter is equal to 18 units and needs to find the length and width of the rectangle

Length = 6 Width = 3

the formula to find the perimeter in a rectangle is 2 (L+W) = perimeter

they gave us the perimeter so we substitute is into the equation:

2 (L+W) = 18

substitute the W by 1/2L

u will end up with 2 (L+1/2L) = 18

distribute the 2 and u will get:

2L+1L=18 which is 3L=18 and L=6

we know that the width is half the length so W=1/2 (6) so W=3