Surajkund Lake is situated in which of the following

The radius of the incircle of a triangle is 6 cm. if the area of the triangle is 30 cm ² , then its perimeter is?

The measure of an angle is one-third of its supplementary angle. Find its measure.

The radius of a circle is 5 cm, and the length of the chord is 6 cm. Find the distance between the chord and the centre of the circle.  

Angles of a triangle are in the ratio 3 : 4 : 5. Find the sum of the largest and smallest angle of the triangle.

The area of an equilateral triangle is 400√3 sq m. Its perimeter is 

∆ABC and ∆DEF are similar and their areas are respectively 25 cm² and 36 cm ² . If EF = 7.2 cm BC is?

In a right angle triangle, the product of two sides is half of the square of the third side (i.e., hypotenuse). Accordingly find out the acute angle?

What is the sum of the supplementary and complementary angles of 60 ^° ?