I need help with questions 1 - 2 and 27- 28(which is the picture I attached) thanks here's questions Question 1:In a circle of radius 1 cm, the area of a certain sector is ?/5 cm. Find the radian measure of the central angle. Express the answer in terms of ? rather than as a decimal approximation. Question 2:For this problem, assume that the earth is a sphere with a radius of 3960 miles and a rotation rate of 1 revolution per 24 hours.(a) Find the angular speed. Express your answer in units of radians/sec, and round to two significant digits.(b) Find the linear speed of a point on the equator. Express the answer in units of miles per hour, and round to the nearest 10 mph.

In Exercises 27 and 28, find (a) the perimeter of the sector; and (b) the area of the sector. In each case, use a calculator to eval- uate the answer and round to two decimal places. 27. 3 m 1350 30 5 in