Geometry. (question from
apex)

D. A trapezoid and a semicircle.

Step-by-step explanation:

We have been given a composite figure. We are asked to find the best description of the shape of the figure.

A. A parallelogram and a circle.

Since opposite sides are not parallel, therefore, our given figure is not a parallelogram.

B. A rectangle and a semicircle.

We know that all angles of rectangle are right angles, but our figure has not any right angle, therefore, our given figure is not a rectangle.

C. A square and a circle.

We know that all angles of square are right angles and all sides are equal, but our figure has not any right angle, therefore, our given figure is not a square.

D. A trapezoid and a semicircle.

Upon looking at our given figure, we can see that it has a trapezoid on base and a semicircle on top, therefore, option D is the correct choice.

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.

which expression represents the approximate length of bc?

step-by-step explanation: