The sides of a rectangle are in the ratio 1:3.The shorter side is 6cm find the longer side

Answer 1

6/x = 1/3

Answer 2

S = shorter side

L = longer side

The sides of a rectangle are in the ratio 1:3 means:

L / S = 1 / 3

Replace L with 6

6 / S = 1 / 3

Multiply both sides by S

6 = S / 3

Multiply both sides by 3

18 = S

S = 18 cm

OR

If the pages are in the ratio 1:3: then the longer sude is 3 times larger than the shorter side.

L= 3 S

L = 3 • 6

L = 18 cm