Question

3. The length and breadth of a rectangle are 40 cm and 10 cm respectively. Find the
perimeter of a square of area equal to that of the rectangle.​

Answer 1

Step-by-step explanation:

area of rectangle=l×b

length=40cm

breadth= 10cm

area =l×b

=40×10

=400cm²

area of rectangle=area of square

400=s²

√400=s

√20×20=s

20cm=s

side of square=20cm

perimeter of square=4×s

perimeter=4×20=80cm

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