What will come in place of the question mark (?) in the

In the given figure PQRS is a square and OQR is an equilateral triangle, then find angle POS?

If angle between two sides of 3 cm & 2 cm of a triangle is 30°. what is the area of the triangle ?

Two concentric circles of radii 10 cm and 6 cm are given. Find the length of the chord of the larger circle which touches the smaller circle.

In ΔABC, PQ is parallel to BC If AP: PB=1:2 and AQ=3 cm, AC is equal to?

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

If O is circumcentre of acute angled triangle ABC, if ∠  BAC = 70˚  then  ∠ BOC = ?

Find the area of triangle having sides 5 m, 6 m, and 9 m.

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

If G is the centroid and AD, BE, CF are three medians of ∆ABC with area 108 cm² , then the

area of ∆EFG is?

The length of the each side of an equilateral triangle is 14√3. The area of incircle, (cm ² ) is