Which choice best represents the area of a circle with a diameter of 16 cm. Use ≈3.14 Question options:

256 centimeters squared

803.84 centimeters squared

25.12 centimeters squared

200.96 centimeters squared

200.96 centimeters squared

Step-by-step explanation:

16 / 2 = 8

3.14 x 8 x 8

Since the formula is 3.14r^2, you have to divide the diameter into 2 raidiuses to get the circle area.

9.55 degrees.

step-by-step explanation:

the given angle is

1 cycle is equal to 2π radians. so 4π will be equal to two cycles.

5.166667π-4π = 1.166667π

hence, this angle goes a little more than negative x axis.

1.166667π-π= 0.166667π

hence, the reference angle is 0.166667π radians.

1 radian = 57.2958 degrees

now, in degrees, this should be equals to 9.55 degrees.

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,