Which site was designated as India’s 13th UNESCO

The lengths of three medians in a triangles are 9 cm, 12 cm, 15 cm. What is the area of that traingle (in cm ² )?

PQRS is a cyclic quadrilateral of which PQ is the diameter. Diagonals PR and QS intersect at A. If SQR = 25°, then angle PAS measures

Find the difference between angle and its complement if the angle is five-thirteenth of its complement.

A rectangle with a diagonal of length 28m is inscribed in a circle. Find the area of a circle?

In ∆ABC , G is the centroid , AB = 5 cm, BC= 8 cm and AC = 7 cm , find GD, where D is the mid-point of BC?

If in a ΔABC, D is a point on BC such that BD = 5cm , BC = 9 cm then what is ratio of area of ΔABD to area of ΔADC ?

ABC is a triangle. AB = 5 cm, AC = √41 cm and BC = 8 cm. AD is perpendicular to BC. What is the area (in cm²) of triangle ABD?

In the figure given below, AC = 16 cm and BF = 5 cm. If AE:CE = 5:3, then find the perimeter of ΔABC.

The length of the each side of an equilateral triangle is 28 cm. The area of incircle, (cm ² ) is