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spin [16.1K]
3 years ago
7

A rectangle has a perimeter of 84 meters. One dimension is 7 meters. How long is

Mathematics
1 answer:
Lemur [1.5K]3 years ago
6 0

Answer:

The unknown dimension is 35

Step-by-step explanation:

The perimeter of a rectangle is l+l+w+w or 2l+2w (l=length, w=width)

l+l+w+w=84

7+7+w+w=84

14+w+w=84

then we subtract 14 from 84

w+w=70

2w=70

\frac{70}{2}=35

w=35

Let's check our answer

35+35+7+7=84

<u>Hope this helps :-)</u>

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