In triangle PQR, points A, B and C are taken on PQ, PR and QR respectively such that QC = AC and CR = CB. If ∠QPR = 40°, then ∠ACB is equal to: 

(2x + 4) and (x - 1) are the angle pairs of angles of measurement, then their measurement will be

The lengths of one side of a rhombus and one of the two diagonals are 6 cm each. Find the area of the rhombus (in cm²). 

Find the length of a tangent, drawn to a circle of radius 4 cm, from a point which is at a distance of 5 cm from the centre?

If the perimeter of an equilateral triangle is 30 meters, what is its height?

The area of a triangle is 456 sq.cm and its height is 24 cm. The length of its base is

In the given figure, PQR is an equilateral triangle with side as 12 cm. S and T are the midpoints of the sides PQ and PR respectively. What is the area (in cm²) of the shaded region?

In the figure given below, PT=6 cm and PA=4 cm. What is the length of AB?