A rectangle has a perimeter of 48 cm . If the length is three times as long as its breadth, then find its length and breadth.
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Let the breadth be x
Length = 3x
Given that the perimeter is 48 cm:
Perimeter = 2( Length + Breadth)
48 = 2( 3x + x)
48 = 2(4x)
48 = 8x
x = 48 ÷ 8
x = 6
Find the length and breadth:
breadth = x = 6 cm
Length = 3x = 3(6) = 18 cm
Answer: The length is 18 cm and the breadth is 6 cm
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