Given below is the design of a shooting target. The radii of the circles from the smallest to the largest are:

1 cm, 2 cm, 3 cm, 4 cm

Answer the following.

How much area is colored blue?
cm2
How much area is colored yellow?
cm2
How much area is colored red?
cm2
Express each answer in terms of π.

Grace is standing 18 feet from a lighthouse and kelly is standing 10 feet from grace. the angle that grace looks up to see the top of the lighthouse is 45°. the angle that kelly looks up to see the top of the lighthouse is y°. find the height, h, of the lighthouse. find the angle, rounded to the nearest tenth of a degree, in which kelly looks up to the top of the lighthouse. to the nearest tenth of a degree, find the value of x° . in two or more sentences, explain your calculations