A50-foot tree casts a shadow 9 feet long. the sine of the angle of elevation of the top of the tree to the sun is approximately a. 98 b. 01 c. 18 d. 02

256π units²   (answer b)

step-by-step explanation:

the formula for the surface area of a sphere of radius r

is             a = 4πr²

and so, if r = 8 units, then the surface area is:

a = 4π(8 units)² = 256π units²   (answer b)

2/3

step-by-step explanation:

the slope of a line is equal to the rise/run. in this case the line rises 2 units for every +3 units it moves