In the given figure, AB, AE, EF, FG and GB are semicircles. AB=56 cm and AE=EF=FG=GB. What is the area (in cm²) of the shaded region?

Ratio of the number of sides of two regular polygons is 5 : 6 and the ratio of their each interior angle is 24 : 25. Then the number of sides of these two polygons are 

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?

If the length of the three sides of a triangle are 6 cm, 8 cm, and 10 cm,  then the length of the median to its greatest side is

if θ is acute angle and sin (θ+18⁰) = 1/2, then the value of θ in circular measure is :

The area of a triangle with vertices A (0, 8), O (0, 0), and B (5, 0) is :

If the circumcenter of the triangle lies outside it, then the triangle is