Area Problems If the sides of a rectangle are increased by 5%, find the percentage increase in its diagonals. 6% 9% 4% 5% 6% 9% 4% 5% ANSWER EXPLANATION DOWNLOAD EXAMIANS APP According to the formula,Percentage increase in diagonals = 5%
Area Problems The ratio between the lenght and the breadth of a rectangle is 2 : 1. If breadth is 5 cm less than the length, what will be the parimeter of the rectangle? 40 cm 25 cm 35 cm 30 cm 40 cm 25 cm 35 cm 30 cm ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let length = 2x and breadth = xAccording to the question, 2x - x = 5 ? x = 5? Required perimeter = 2(2x + x) = 6x= 30 cm
Area Problems The ratio of the area of a square to that of the square drawn on its diagonal is 2;3 1:2 3:1 4:1 2;3 1:2 3:1 4:1 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP atio = a 2 2 a 2
Area Problems The altitude of an equilateral triangle of side 2 ? 3 cm is? ? 3/4 3 cm ? 3/2 cm 1/2 cm ? 3/4 3 cm ? 3/2 cm 1/2 cm ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? 1/2 x 2 ? x h = ?3/4 x (2 ?3)2? h = 3 cm.
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 The area of a rectangle is thrice that of square. Length of the rectangle is 40 cm and the breadth of the rectangle is ( 3 / 2 ) times that of the side of the square. The side of the square in cm is? 30 15 20 60 30 15 20 60 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the side of the square = y cmThen, breadth of the rectangle = 3y/2 cm ? Area of rectangle = (40 x 3y/2) cm2= 60y cm2? 60y = 3y2? y = 20Hence, the side of the square = 20 cm
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