Area Problems The area of a circle of radius 5 is numerically what percent its circumference? 250% 150% 350% 450% 250% 150% 350% 450% ANSWER DOWNLOAD EXAMIANS APP
Area Problems Three circles of radius 3.5cm are placed in such a way that each circle touches the other two. The area of the portion enclosed by the circles is 1.567 1.967 1.767 1.867 1.567 1.967 1.767 1.867 ANSWER DOWNLOAD EXAMIANS APP
Area Problems Angles of a quadrilateral are in the ratio 3 : 4 : 5 : 8. The smallest angle is 40° 54° 18° 36° 40° 54° 18° 36° ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let First angle = 3kSecond angle = 4kThird angle = 5k and Fourth angle = 8kWe know 3k + 4k + 5k + 8k = 360°? 20k = 360° ? k = 18 °Measure of smallest angle = 3k =3 x 18 ° = 54 °
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.
Area Problems A rectangle has 15 cm as its length and 150 cm 2 as its area .Its area is increased to 1 1 / 3 times the original area by increasing only its length . Its new perimeter is? 50 cm 60 cm 80 cm 70 cm 50 cm 60 cm 80 cm 70 cm ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Breadth of the rectangle = (150/15) cm= 10 cmNew area = (4/3 x 150) cm2= 200 cm2New length = 200/10 cm=20 cmNew perimeters = 2(20 + 10) cm= 60 cm
Area Problems The area of sector of a circle of radius 5 cm, formed by an arc of length 3.5 cm is? 8. 75 sq.cms 17.5 sq.cms 35 sq.cms 55 sq.cms 8. 75 sq.cms 17.5 sq.cms 35 sq.cms 55 sq.cms ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Area of sector = ( arc length x radius ) / 2 cm2= (3.5 x 5 ) / 2= 8.75 cm2
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