राजभाषा भारती की

The length of the each side of an equilateral triangle is 7√3 cm . The area of circumcircle, (cm ² ) is

If the points P(2, 3), Q(5, a) and R(6, 7) are co-linear, then find the value of 'a'.

The radius of a circle is 25 cm, and the length of the chord is 14 cm. Find the distance between the chord and the centre of the circle.  

In ∆ABC, AD = DB , DE is parallel to BC, and the area of ∆ABC is 20 cm². What is the area of ∆ADE in cm² ?

Find the area of triangle having sides in the ratio 3:5:7 & the perimeter of the triangle is 60 cm

If in a ΔABC, D is a point on BC such that BD = 3cm , BC = 5 cm then what is ratio of area of ΔABD to area of ΔADC ?

PQ and PR are the two chords of a circle. The tangents at Q and R meet at A. If ∠QPR = 64°, then the measure of ∠QAR is?