AB is an arc of a circle, centre O, radius 9 cm. The length of the arc AB is 6π cm. The area of sector AOB is kπ cm². Find the value of k. 0 9 cm B

An exit ramp from one freeway to another freeway forms a 900 arc of a circle. The ramp is scheduled for resurfacing. As shown, its inside radius is 370 ft, and its outside radius is 380 ft. What is the area of the ramp to the nearest integer?

When radii OA and OB are placed so that they coincide, a 240 sector of a circle is sealed to form a right circular cone. If the length of the radius of the circle is 6.4 cm, what is the lateral area of the cone that is formed? Use a calculator and round the answer to the nearest tenth of a square inch.

A lawn roller in the shape of a right circular cylinder has a radius of length 18 in. and a length height of 4 ft. Find the area rolled during one complete revolution of the roller. Use the calculator value of , and give the answer to the nearest square foot.