67. The perimeter of square PQRS is 32 cm. I(QT) 10 cm, 1(PU)=5 cm.
What is the area of the figure?
(1) 100 cm² (2) 112 cm² (3) 128 cm² (4) 90 cm²
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Answer:
(a) Perimeter of square = 4 x side
= 4 x 25 = 100 cm
(b) Perimeter of rectangle = 2 x (length + breadth)
= 2 x (40 + 10)
= 2 x 50 = 100 cm
(c) Perimeter of rectangle = 2 x (length + breadth)
= 2 x (30 + 20)
= 2 x 50 = 100 cm
(d)Perimeter of triangle = Sum of all sides
= 30 cm + 30 cm + 40 cm = 100 cm
Thus, all the figures have same perimeter
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