Question

The length of a rectangle is three times its width and its perimeter is 40, then the length is *
1 point
7m
14m
15m
20m​

Answer 1

Answer:

2(l+b)=40

l+b=20

Also,l=3b

4b=20

b=5,l=15

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Answer 2

Answer :

30m

Step-by-step explanation:

presumed that width =x

And length =3 × x=3x

Perimeter =40m

40=x × 3x

40=4x

40/4=x

10=x

Width =x=10m

Length=3x=30m

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