BD and CE are two medians of the triangle ABC. IF EO = 7 cm, then the length of CE is
28 cm
14 cm
21 cm
21 cm
C.
21 cm
EO = 7 cm (given)
As we know that, centroid divides the median in the ratio 2 : 1.
Therefore,
OC : OE = 2 : 1
The average height of 30 boys out of a class 50 is 160 cm. If the average height of the remaining boys is 165 cm, the average height of the whole class (in cm) is
161
162
163
163
Three median AD, BE and CF of intersect at G; are of
is 36 sq cm. Then the area of
is
12 sq cm
6 sq cm
9 sq cm
9 sq cm
A chord of a circle is equal to its radius. A tangent is drawn to the circle at an extremity of the chord. The angle between the tangent and the chord is
30°
45°
60°
60°
The difference between simple and compound interest (compounded annually) on a sum of money for 3 years at 10% per annum is Rs. 93. The sum (in Rs.) is
30000
30300
3000
3000