Question

The length of a rectangle is 3 times the width and its area is 108 square units. What is the length of the rectangle?

6 units

12 units

15 units

18 units

Answer 1

do you know the formula for the area of a rectangle ?

Answer 2

@phi No ._.

Answer 3

Isn't it A = W x L ?

Answer 4

yep, Area = Length x Width (for a rectangle)
so A = 108
A = L x W
108 = L x W
also L = 3W
so 108 = L x W
108 = 3W x W

Answer 5

can you solve from here for W and then L...? @nananea1998

Answer 6

Do I divide 108 with 4 ??? Is that going the right direction ?

Answer 7

not yet...
hint: 5a x a = 5a^2... not 6a

Answer 8

@Jack1 So it's 18?? That's the answer I came up with

Answer 9

k... ah for L, yep L = 18

Answer 10

@Jack1 Thank youu!! ^_^

Answer 11

all good, this was all u hey, props!