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In ΔABC, PQ is parallel to BC If AP: PB= 2:5 and AQ= 2 cm, AC is equal to?

The length of a tangent from a point A at a distance 5 cms. from the centre of the circle is 4 cms. Radius of the circle is

If O is circumcentre of acute angled triangle ABC, if ∠ OBC = 30⁰ then ∠BAC = ?

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 ?

What will be inradius of an equilateral triangle of side 10 cm?

In ∆ABC , G is the centroid , AB = 8 cm, BC= 10 cm and AC = 12 cm , find GD, where D is the mid-point of BC?

The length of the each side of an equilateral triangle is 63√3 cm . The area of circumcircle, (cm ² ) is