Question
The area of a rectangle is 96 cm2 and its length is 12 cm. The perimeter of the rectangle is same as the perimeter of a triangle. Find the semi perimeter of the triangle.
Answer: Option C
:
C
Area of a rectangle = length × breadth
⇒ 96 = 12 × breadth
Breadth = 8 cm
Perimeter of the rectangle = 2(length + breadth) = 2(12+8) cm = 40 cm
Perimeter of the rectangle = Perimeter of the triangle
Therefore, semi perimeter of the triangle =402=20cm
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:
C
Area of a rectangle = length × breadth
⇒ 96 = 12 × breadth
Breadth = 8 cm
Perimeter of the rectangle = 2(length + breadth) = 2(12+8) cm = 40 cm
Perimeter of the rectangle = Perimeter of the triangle
Therefore, semi perimeter of the triangle =402=20cm
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