Question

check my answer please

Answer 1

What is the area of the sector bound by the center of the circle and arc CD in the circle below?

Circle A is shown with a radius labeled 15 feet and a central angle marked 45 degrees.

9.42 ft2 <------ my answer

19.54 ft2

34.89 ft2

88.31 ft2

Answer 2

A = 1/2 r^2 theta
= 225/2 * 45pi/180 = 88.35 approximately
so yes! you're correct :)

Answer 3

oh, i thought you chose 88.35 :P

Answer 4

yay your back!

Answer 5

What step is needed when constructing a circle inscribed in a triangle?

Construct the angle bisectors of each angle in the triangle.

Construct the perpendicular bisectors of each side of the triangle.

Construct the midpoints of each side of the triangle. <----- my answer

Construct the altitude of each angle in the triangle.

Answer 6

Your answer is correct

Answer 7

http://www.mathsisfun.com/geometry/construct-triangleinscribe.html

Answer 8

and your answer isn't correct

Answer 9

oh is it A?

Answer 10

It's actually A

Answer 11

yes, its A

Answer 12

yay thank you!

Answer 13

Which statement best describes a tangent of a circle?

It is a segment that intersects the circle in exactly two points. <------ my answer

It is a segment that touches the circle in exactly one point and makes a right angle with the radius.

It is a segment that connects a point on the circle to the center of the circle.

It is a segment that connects two distinct points on a circle.

Answer 14

or D not sure

Answer 15

B

Answer 16

how?

Answer 17

tangent intersects the circle n EXACTLY one point!
and it is perpendicular to radius :)

Answer 18

so @rocketier97 was right?

Answer 19

yes