The area of an equilateral triangle is 25√3 cm², then its perimeter is –

If the height is doubled and the base is decreased by 20%, then the ratio of old area of the triangle and new area of the triangle is –

The ratio of the side and height of an equilateral triangle is –

A rectangle has an area 30 cm² and perimeter 26 cm. Its sides (in cm) are

Two equal circles intersect such that each pass through the center of the other. If the length of the common chord of the circle is 10√3 cm, then what is the diameter of the circle?

Two identical circles intersect each other such that each passes through the centre of the other. Length of common chord is 16√3 cm. What is the radius of each circle?

What is the total surface area of a cylinder having radius of base as 7 cm and height as 5 cm?

What is the area (in cm² ) of an equilateral triangle of side 20 cm?