In the following figure if OA=10 and AC=16, then OB must be:

Find measure of central angle of the arc whose length is 22 cm and radius of the circle is 28 cm?

In a given circle, the chord PQ is of length 18 cm. AB is the perpendicular bisector of PQ at M. If MB=3. Find the length of AB?

The length of the intercept of the graph of the equation 9x – 12y = 108 between the two axes is 

In the given figure ΔDEF is right angle triangle, ∠G=120° and DG=12 cm , GF=10 cm then find out the value of DF.

If one of the interior angles of a regular polygon is equal to 5/6 times of one of the interior angles of a pentagon, then the no. of sides of the polygon.

A circle touches a quadrilateral ABCD. Find the true statement: -

One angle of pentagon is 140°. If the remaining angles are in the ratio 1 : 2: 3: 4, the size of the greatest angle is: