find the area of a rectangle whose length is 5 more than 4 times its breadth and its perimeter is 60m
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4
Answer:
5
Step-by-step explanation:
l = 5 + 4b ..... eq. 1
l + b = 30 ... eq . 2
from 1 and 2 ...
5 + 4b + b = 30
5b + 5 = 30
b = 5
l
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