Find the area of the largest triangle made in a semicircle of r cm radius?

Find the area of the circle formed in an equilateral triangle of side 42 cm. Using (π=22/7)

In the given figure AD ‖ BE, and ∠DCE=85° and ∠BDC=30° then find out the value of x?

Find the value of x in the given figure.

In the given figure, TP and TQ are tangent. If ∠ PAQ=50° then find the value of ∠ PTQ.

Find the distance travelled by a 40 cm diameter wheel to cover a distance of 176 meters? Using (π=22/7)

One of the diagonals of a rhombus is 70% of the other diagonal, what is the ratio of area of rhombus to the square of the length of the larger diagonal? 

The sides of a triangle are 56 cm, 90 cm and 106 cm. The circumference of its circumcircle is: