question The circumference of a circle is 18 18 units What is its radius

Math

The circumference of a circle is 18�18π units. What is its radius?

A. 3 units
B. 6 units
C. 9 units
D. 12 units

Circumference of a circle = 2�×radius2π×radius.

If the base of a triangle is 6 units and its height is 8 units, what is its area?

A. 12 square units
B. 24 square units
C. 30 square units
D. 48 square units

A rectangle has a length of 8 units and a perimeter of 24 units. What is its width?

A. 4 units
B. 6 units
C. 8 units
D. 10 units

Solve for �x: 12(6�−3)=921(6x−3)=9

A. �=3x=3
B. �=4x=4
C. �=5x=5
D. �=6x=6

If 2�+5=152a+5=15, what is the value of �a?

A. 5
B. 6
C. 7
D. 8

If 2�+5=172p+5=17, what is the value of �p?

A. 6
B. 7
C. 8
D. 9

In a right-angled triangle, what is the side opposite the right angle called?

A. Hypotenuse
B. Adjacent
C. Opposite
D. Base

What is the measure of each interior angle in a regular octagon?

A. 45∘45∘
B. 90∘90∘
C. 135∘135∘
D. 160∘160∘

What is the sum of the interior angles of a pentagon?

A. 90∘90∘
B. 180∘180∘
C. 360∘360∘
D. 540∘540∘

If �+5=12x+5=12, what is the value of �x?

A. 5
B. 6
C. 7
D. 8

If 3883 of a number is 24, what is the number?

A. 32
B. 48
C. 64
D. 72