If the length of a median of an equilateral triangle is x cm, then its area is
1) x² 2) Ö3x² / 2 3) x² / Ö3 4) x² / 2
To draw a pair of tange nts to a circle which are incline d to e ach othe r at an angle of 45° it is re quire d to draw tange nts at the e nd point of those two radii of the circle , the angle be twe e n which is :
1) 105° 2) 135° 3) 145° 4) 70°
If every side of a triangle is doubled, then increase in the area of the triangle is
1) 100Ö2 % 2) 200 % 3) 300 % 4) 400 %
A point O is at a distance of 10 cm from the centre of a circle of radius 6 cm. How many tangents can be drawn from point O to the circle ?
1) 1 2) 3 3) infinite 4) 2
In the given figure , triangle s ABC and DEF are similar. The are a of triangle ABC is 9 sq. cm and the are a of triangle DEF is 16 sq. cm. If BC = 2.1 cm find the length of EF.
1) 4.9 cm 2) 6.8 cm 3) 2.8 cm 4) 9.4 cm
From the given figure , find out what is AC : AB.
1) 2 : 3 2) 5 : 3 3) 3 : 2 4) 3 : 5