The length of the rectangle is 6 times the width, find the sides of the rectangle if its perimeter is 560cm.

Given:
Rectangle with sides a (length) and b (width)
a> b 6 times
P = 560 cm
a -?
b -?
Since a> b is 6 times:
a = 6 * b.
The perimeter of a rectangle can be found using the formula P = 2a + 2b.
Find the width of the rectangle:
(2 * 6b) + 2b = 560;
12b + 2b = 560;
14b = 560;
b = 560: 14;
b = 40 cm.
Find the length of the rectangle:
a = 6b;
a = 6 * 40;
a = 240 cm.
Answer: The length of the rectangle is 240 cm, the width is 40 cm.