Q128 of 131 Page 226

4 squares each of side 10 cm have been cut from each corner of a rectangular sheet of paper of size 100 cm × 80 cm. From the remaining piece of paper, an isosceles right triangle is removed whose equal sides are each of 10 cm length. Find the area of the remaining part of the paper.

Total area of rectangular sheet = 100 × 80 = 8,000 cm2


Area of each square = (10)2 = 100 cm2


Area of triangle = × 10 × 10 = 50 cm2


Area of the remaining part of the paper = 8,000 – (100 + 150) = 7,550 cm2


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(i) family room


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(iii) dining room


(iv) bedroom 1


(v) bedroom 2


B. The carpet costs ₹ 200/m2. Find the cost of carpeting each room.


C. What is the total cost of moulding for all the five rooms.

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