The radius of a circular pipe is 10 cm. What length of a tape is required to wrap once around the pipe`(pi = 3.14)`?

The radius of a semi-circular protactor is 14 cm. Find its perimeter and area.

The minute hand of a circular clock is 15 cm long. How far does the tip of the minute hand move in 1 hour. (Take pi = 3.14)

The adjoining figure shows two circles with the same centre. The radius of the larger circle is 10 cm and the radius of the smaller circle is 4 cm(a) the area of the larger circle (b) the area of the smaller circle (c) the shaded area between the two circles. ( pi = 3.14)

Saima wants to put a lace on the edge of a circular table cover of diameter 1.5 m. Find the length of the lace required and also find its cost if one meter of the lace costs Rs. 15. (Take pi= 3.14)

Pragya wrapped a cord around a circular pipe of radius 4 cm (adjoining figure) and cut of the length required of the cord . Then she wrapped it around squre box of side 4 cm (also shown). Did she have any cord left? (pi = 3.14)

The inner diameter of a cylindrical wooden pipe is 24 cm and its out diameter is 28 cm. The length of the pipe is 35 cm. Find the mass of the pipe, if 1 cm^3 of wood has a mass of 0.6 g.

Find the area of a circle of radius 30 cm (use pi = 3.14)

The circumference of a circle is 31.4 cm. Find the radius and the area of the circle? (Take pi = 3.14)