Length 56 dm, width 24 cm. Find the perimeter. Length 120 mm, width 45 cm. Find a perimeter?
| December 21, 2020 | education
The perimeter of a rectangle is the sum of the lengths of all sides. A rectangle has 2 lengths and 2 widths.
So the perimeter is 2a + 2b
1) P = 56dm * 2 + 24cm * 2 = 560cm * 2 + 24cm * 2 = 1120cm + 48cm = 1168cm
2) P = 120mm * 2 + 45cm * 2 = 12cm * 2 + 45cm * 2 = 24cm + 90cm = 114cm
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