Area Problems Find the area of a rectangle having 15m length and 8m breadth. 120 sq m 125 sq m 111 sq m 115 sq m 120 sq m 125 sq m 111 sq m 115 sq m ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Required area = Length x Breadth= 15 x 8 = 120 sq m
Area Problems Area of a four wall of a room is 77 square meters . the length and breadth of room are 7.5 meters and 3.5 meters respectively . the height of the room is? 5.4 meters 6.77 meters 7.7 meters 3.5 meters 5.4 meters 6.77 meters 7.7 meters 3.5 meters ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Area of four walls = 2 x (l + b ) x h? 2 x (7.5 + 3.5 ) x h = 77 m2? h = 77 / (2 x 11) = 7/2? h = 3.5 meters
Area Problems Area of a square is 1/2 hectare. The diagonal of the square is? 100 meter 50? 2 meter 50 meter 250 meter 100 meter 50? 2 meter 50 meter 250 meter ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Area = 1/2 hectare = 10000 / 2 m2= 5000 m2Again Area = 1/2 x (Diagonal)2So 1/2 x (Diagonal)2 = 5000m2? Diagonal2= 10000 ? Diagonal = 100
Area Problems If 88 m wire is required to fence a circular plot of land, then the area of the plot is? None of these 616 m2 526 m2 556 m2 None of these 616 m2 526 m2 556 m2 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Circumference of circular plot= 88 m? 2 x (22/7) x r = 88? r = 88 x (7/22) x (1/2) = 14 m Now area = ?r2=( 22/7) x 14 x 14 m2= 616 m2
Area Problems The area of circle is 38.5 sq. cm. Its circumference is? 22 cm 6.20 cm 121 cm 11 cm 22 cm 6.20 cm 121 cm 11 cm ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? ( 22 x r2) / 7 = 38.5? r2 =(38.5 x 7) /22? r = 3.5 cm? Circumference = 2 x (22/7) x 3.5 cm= 22 cm
Area Problems Area of a square with side x is equal to the area of a triangle with base x. The altitude of the triangle is? x/2 x 2x 4x x/2 x 2x 4x ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let h be the altitude of triangle.So area of triangle = (1/2)xh area of square = x2From question area of square = area of triangle x2 = (1/2)xh ? h = (2x2)/x = 2x
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