8to 10 questions its super hard i need in 8 and 9 i need choose 2 of the 3 questions but i dont know how to answer and i need put the figures and formulas too : (

a) The angle shown as 45.5 deg in the figure should read 45.8 deg.

tan 45.5 deg = y/175

y = 175 ft * tan 45.8 deg = 180 ft

tan 34.4 deg = z/175

z = 175 ft * tan 34.4 deg = 120 ft

y - z = 180 ft - 120 ft = 60 ft

The height of Pres. Washington's face is 60 ft.

b)

Area of 1/8 of a 12" pizza: 1/8 * pi * (12/2 ")^2 = 14.1 in.^2

Area of 1/6 of a 10" pizza: 1/6 * pi * (10/2 ")^2 = 13.1 in.^2

The slice of the 12" pizza is larger.

c)

A bearing of 27 deg is 90 - 27 = 63 deg counterclockwise from due East.

A bearing of 117 deg is 117 - 90 = 27 deg clockwise from due East.

The two bearing directions make a 90 deg angle between them.

55 km/h for 2 hours = 110 km

60 km/h for 1.5 hours = 90 km

The two amounts traveled are 110 km and 90 km at 90 deg from each other. They form the legs of a right triangle. The distance traveled from the starting point is the hypotenuse of the right triangle formed by the the two distances traveled.

(90 km)^2 + (110 km)^2 = d^2

d = 142 km

The distance traveled is 142 km.

just take the area of the square and then the area of the circle then subtract the circle area from the squares area

step-by-step explanation:

step-by-step explanation: