Area Problems A man walked diagonally across a square plot. Approximately what was the percent saved by not walking along the edges? 30% 20% 40% 10% 30% 20% 40% 10% ANSWER EXPLANATION DOWNLOAD EXAMIANS APP let the side of the square be x meterslength of two sides = 2x metersdiagonal = 2 x = 1.414x m saving on 2x meters = .59x m saving % = 0 . 59 x 2 x * 100 % = 30% (approx)
Area Problems The length of a rectangular field is 100 m and its breadth is 40 m. What will be the area of the field? (4 x 104) sq m (4 x 102) sq m (4 x 103) sq m (4 x 10) sq m (4 x 104) sq m (4 x 102) sq m (4 x 103) sq m (4 x 10) sq m ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Required area = Length x Breadth= 100 x 40 = 4000 sq m= 4 x 103 sq m
Area Problems A hall 20 m long and 15 m broad is surrounded by a verandah of uniform width of 2.5 m. the cost of flooring the verandah at the rate of 3.50 per sq. meter is? Rs. 800 Rs. 600 Rs. 700 Rs. 500 Rs. 800 Rs. 600 Rs. 700 Rs. 500 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Area of verandah = [(25 x 20) -(20 x 15)] m2= 200 m2? Cost of flooring = Rs. (200 x 3.50)= Rs. 700
Area Problems One side of a rectangular field is 4 meter and its diagonal is 5 meter. The area of the field is? 20 m 2 12 m2 15 m2 4?5 m2 20 m 2 12 m2 15 m2 4?5 m2 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Other side = ?5 2 - 42 = ? 9=3 mSo The area of the rectangular field = 4 x 3 = 12 m2
Area Problems The area of the largest circle that can be drawn inside a rectangle with sides 18cm by 14cm is 154 49 378 1078 154 49 378 1078 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The diameter is equal to the shortest side of the rectangle. So radius= 14/2 = 7cm. Therefore, area of circle = (r)2 = (22/7) x 49 = 154 cm2
Area Problems The radius of a circular field is 25 m. Find the area of the field. 125 ? sq m 625 ? sq m 135 ? sq m 25 ? sq m 125 ? sq m 625 ? sq m 135 ? sq m 25 ? sq m ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Required area = ?r2 = ? x 25 x 25 = 625? sq m.
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