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The length and breadth of a rectangle a
(3x + 4)cm and 42 – 13 cm
respectively. If the perimeter of the
rectangle is 94 cm, then its area is
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Answer:
1099.1 cm²
Step-by-step explanation:
length = (3x + 4) cm
breadth = 42 - 13 cm = 29 cm
perimeter of rectangle = 2( l + b )
94 = 2 × ( 3x + 4 + 29 )
94/2 = 3x + 73
47 = 3x + 73
3x = 73 - 47
3x = 34
x = 34/3
x = 11.3cm
length = 3 × 11.3 + 4 cm
= 33.9 + 4
= 37.9 cm
Area of rectangle = l × b
= 37.9 × 29
= 1,009.1 cm²
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