Area Problems If the circumference of a circle is the 352 meters, then its area in m square is? 8956 5986 6589 9856 8956 5986 6589 9856 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP circumference = 2?r = 2 x (22 / 7) x r = 352? r = (352 x 7) / (22 x 2) =56 cmNow area = ?r2 = (22 / 7) x 56 x 56 m2= 9856 m2
Area Problems A rectangular plot is half as long again as it broad. The area of the lawn is 2/3 hectares. The length of the plot is? 100 meters (100/ ? 3 ) meters 66.66 meters 33 meters 100 meters (100/ ? 3 ) meters 66.66 meters 33 meters ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let breadth = b meters. then, length = 3b/2 meters ? b x 3b/2 = 2/3 X 10000? b2 = (4 x 10000)/9? b = ( 2 X 100)/3 m ? Length = (3/2) x (2/3) x 100 m= 100 m
Area Problems The area of sector of a circle of radius 5 cm, formed by an arc of length 3.5 cm is? 55 sq.cms 35 sq.cms 8. 75 sq.cms 17.5 sq.cms 55 sq.cms 35 sq.cms 8. 75 sq.cms 17.5 sq.cms ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Area of sector = ( arc length x radius ) / 2 cm2= (3.5 x 5 ) / 2= 8.75 cm2
Area Problems The ratio of the radii of two circle is 1:3 the radio of their areas is? 1:9 None of these 1:3 1:6 1:9 None of these 1:3 1:6 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The Radio of areas = area of first circle : area of 2nd circle= ?r2 / ?(3r)2= ?r2/ 9 ?r2= 1/9 = 1: 9
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 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 (4 x 104) 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 The area of a rectangle, 144 m long is the same as that of a square having a side 84 m long. The width of the rectangle is? 14 m Cannot be determined 49 m 7 m 14 m Cannot be determined 49 m 7 m ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Area of the square = (84 + 84) m2Area of the rectangle = (144 x width) m2From question both area would be same,? Width = (84 x 84) / 144 m = 49 m
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