Q4. The area of a rectangle is four times of a square. The length of the rectangle is 80 cm and the breadth of the rectangle is 3 times that of the side of the square. What is the side (in cm) of the square? 50 cm 55cm 60 cm 40 cm 65 cm
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Answer:
60 cm
Step-by-step explanation:
Let the area of square be x.
Let the side of square be a.
Area of rectangle = 4x
Length of rectangle = 80 cm
Breadth of rectangle = 3a
80 * 3a = 4x
240 a = 4x
60a = x
side of square^2 = Area of square
a^2 = x
60a = x (from above)
a^2 = 60a
a = 60 cm
The side of square is 60 cm.
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