a rectangle is three times as long as it is broad; if the perimeter of the rectangle is 40m, find its length and breadth
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Answer:
L= 15 cm , b= 5cm
Step-by-step explanation:
The perimeter is 40cm.
The perimeter is twice the length plus twice the breadth.
Half the perimeter is 20cm.
Let the breadth be b.
The length is 3b.
b+3b = 4b =20cm.
b = 5cm.
3b = 15cm.
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