Area Problems The ratio of the area of square of side a and equilateral triangle of side a is? 2 : ?3 4 : ?3 4 :3 2 :1 2 : ?3 4 : ?3 4 :3 2 :1 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Ratio of area = a2/ ?(3/4) a2= 4/?3 = 4:?3
Area Problems Find the perimeter of a triangle with sides equal to 6 cm, 4 cm and 5 cm. 14 cm 20 cm 15 cm 18 cm 14 cm 20 cm 15 cm 18 cm ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Given that, a = 6 cm, b = 4 cm and c = 5 cm Required perimeter = a + b + c= 6 + 4 + 5 cm = 15 cm
Area Problems The diagonals of two squares are in the ratio of 3 : 2. Find the ratio of their areas. 9 : 2 9 : 4 9 : 7 9 : 5 9 : 2 9 : 4 9 : 7 9 : 5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the diagonals of the squares be 3x and 2x.? Ratio of their areas = [(1/2) (3x2)] / [(1/2) (2x2)] = 9/4
Area Problems The perimeter of an equilateral triangle is 90 cm. Find its area. 225?3 sq cm 151?3 sq cm 250?3 sq cm 135?3 sq cm 225?3 sq cm 151?3 sq cm 250?3 sq cm 135?3 sq cm ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Given that, perimeter = 90 cm? 3a = 90 cm [a = side]? a = 90/3 = 30 cm? Area = ?3a2 / 4 = ?3/4 x (30)2= 900 x ?3/4 = 225?3 sq cm
Area Problems A room of 5m 44cm long and 3m 74cm broad is to be paved with squre tiles. Find the least number of squre tiles required to cover the floor. 176 146 166 136 176 146 166 136 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP area of the room = 544 x 374 sq.cm size of largest square tile = H.C.F of 544cm and 374 cm= 34 cm area of 1 tile = 34x34 sq cm no. of tiles required = (544 x 374) / (34 x 34) = 176
Area Problems The ratio of the area of a square to that of the square drawn on its diagonal is 4:1 2;3 1:2 3:1 4:1 2;3 1:2 3:1 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP atio = a 2 2 a 2
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