a) The edge of a plot of land is in the shape of the arc of a circle having radius 220 feet and consists of one-eighth of a circle. Approximately, what length of fencing would be needed for this part of the plot of land? b) Find the approximate area of the arc of a circle having diameter 17 inches subtended by 105°.

A person is remodeling the front entrance to his home and needs to cut an arch for the top of an entranceway. The arch needs to be 24 ft wide and 6 ft high. To draw the​ arch, he will use a stretched string with chalk attached at an end as a compass.   ​a) Using a coordinate​ system, locate the center of the circle. ​b) What radius should the person use to draw the​ arch?

An isosceles triangle has sides that are 5 cm, 5 cm,and 8 cm long. Find its area and the lengths of thethree altitudes