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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 = 20 cm, BC= 24 cm and AC = 28 cm , find GD, where D is the mid-point of BC?

Find the distance between two parallel chords of length 24 cm each in a circle of diameter 25 cm?

In triangle ABC, AB = AC. Point D lies on AB such that AD = DC = BC. Find the value of ∠BDC.

If G is the centroid and AD, BE, CF are three medians of ∆ABC with area 216 cm ² , then the area of ∆AGF is?

If O is circumcentre of acute angled triangle ABC, if ∠  BOC = 150˚  then  ∠ BAC = ?

The radius of a circle is 10 cm, and the length of the chord is 12 cm. Find the distance between the chord and the centre of the circle.  

If O is circumcentre of acute angled triangle ABC, if ∠  BOC = 100˚  then  ∠ BAC = ?

In ∆ABC, AB = 5cm, BC = 10cm, and AC = 13cm then find out the value of cos A.