Answer:
A)3,9
Step-by-step explanation:
lets take the length as "x"
since the width is 3 times the length we can use 3x to represent the width
formula for perimeter: 2(l)+2(w)
2(x)+2(3x)=24
2x+6x=24
8x=24
8x/8=24/8
x=3
if x is 3, the length is 3
if x is 3, the width, 3x is 9, (3*3)
