The radius of a semicircle is 35 cm, find its area and perimeter.

A field is in the form of an equilateral triangle of side 100 m. A horse is tied to a vertex of the field, with a 15 m long rope. Over what area can the horse graze? 

If each edge of a cube is reduced by 25 percent, find the ratio of the volume of the original cube and the resulting cube?

The ratio of the radii of two wheels is 3: 4, then the ratio of their circumferences will be.

The perimeter of a square and an equilateral triangle is the same if the length of the diagonal of the square is $$ {12 \ sqrt {2}} $$ cm. If, what will be the area of the triangle?

A wire of length 60 m is used to enclose a field which is in the shape of a right - angled triangle. The area of the field is 150 m² then, the largest side of the field has a length of: 

Find the shaded area in the given figure. If each circle having radius of 7cm?

What is the total surface area and curved surface area of a solid semi circle with radius of 14 cm?