Area Problems One side of a rectangular field is 4 meter and its diagonal is 5 meter. The area of the field is? 15 m2 20 m 2 12 m2 4?5 m2 15 m2 20 m 2 12 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 if the side of a square be increased by 4 cms. The area increased by 60 sq. cms . The side of the square is? 12 cm 14cm 13 cm None of these 12 cm 14cm 13 cm None of these ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let each side = x cmThen, (x + 4 )2 - x2 = 60? x 2 + 8x + 16 - x2 = 60? x = 5.5 cm
Area Problems Area of a square is 1/2 hectare. The diagonal of the square is? 50? 2 meter 250 meter 100 meter 50 meter 50? 2 meter 250 meter 100 meter 50 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 A wheel make 4000 revolution in moving a distance of 44 km. Find the radius of the wheel. 27 m 1.75 m 25 m 28 m 27 m 1.75 m 25 m 28 m ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Distance covered in 1 revolution = (44 x 1000) / 4000 = 11 mAccording to the question, 2?r = 11 ? (44/7) x r = 11? r = (11 x 7) / 44 = 1.75 m
Area Problems What is the area of a square having perimeter 68 cm? 284 sq cm 361 sq cm 289 sq cm 269 sq cm 284 sq cm 361 sq cm 289 sq cm 269 sq cm ANSWER EXPLANATION DOWNLOAD EXAMIANS APP According to the question,4a = 68 [ where a = side]?a = 68/4 = 17 cm? Required area = a2= (17)2 = 289 sq cm
Area Problems The radius of a circular field is 25 m. Find the area of the field. 125 ? sq m 25 ? sq m 135 ? sq m 625 ? sq m 125 ? sq m 25 ? sq m 135 ? sq m 625 ? sq m ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Required area = ?r2 = ? x 25 x 25 = 625? sq m.
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