An equilateral triangle is inscribed in a circle of radius 2r. Express the area A within the circle but outside

An island is 4 miles from the nearest point P on a straight Islandshoreline. Atewn is 13 miles down the shore from P. Townx 13 -x {a} If a person can row a boat at an average speed of 2 miles per hour and the same person can walk 5 miles per hour, express the lime T that it takes to go from theisland to town as a function of the distance x from P to where the person lands the boat. Trx) = [I [Use integers or fractions for any numbers in the expression.)