What's the size?
A rectangle has a length that is twice its width.
If the perimeter of the rectangle is 36 cm,
what are the length and width of the rectangle?
Word Problem
A bridge is built across a river. One quarter of the bridge is over the left bank of the river and one third of the bridge is over the right bank. The river is 120 m wide. How long is the bridge?
Let the width = x cm
ReplyDeleteThen the length = 2x cm
The perimeter of a rectangle is:
Perimeter = 2 × (length + width)
So:
2 × (x + 2x) = 36
2 × (3x) = 36
6x = 36
x = 6
Width = 6 cm
Length = 2 × 6 = 12 cm
Final Answer:
Width = 6 cm
Length = 12 cm