$central \: \angle \: ( \theta) = 60 \degree \\ \\ area \: of \: sector \\ = \frac{\theta}{360 \degree } \times area \: of \: circle \\ \\ = \frac{60 \degree }{360 \degree } \times 9\pi \\ \\ = \frac{1}{6} \times 9\pi \\ \\ = 1.5\pi \\ = 1.5 \times 3.14 \\ = 4.71 \: {units}^{2} \\ \\ \red{ \bold{ area \: of \: sector = 4.71\: {units}^{2} }} \\$

4 0

3 years ago

Find the area of a circle with a diameter of 20 inches. Use 3.14 for pi.

satela [25.4K]

<span>d = 20 inches
r = d/2 = 20/2 = 10 inches
Area = πr^2
= 22/7 * 10^2 inch^2
= 2200/7 inch^2
= 314.2 inch^2
Therefore, Answer is B. 314.2 in^2 Ans</span>

5 0

2 years ago

Read 2 more answers

Multiply these polynomials.

maksim [4K]

When we multiply the polynomials we will get:
(5x^2+2x)(3x^2-7x+4)
=5x^2(3x^2-7x+4)+2x(3x^2-7x+4)
=15x^4-35x^3+20x^2+6x^3-14x^2+8x
=15x^4+(6x^3-35x^3)+(20x^2-14x^2)+8x
=15x^4-29x^3+6x^2+8x
The correct answer is C

4 0

3 years ago

Consider the equation Y=-2x+5 Create a table of five ordered pairs that satisfy the equation. What is the slope of the line repr

Vikentia [17]

Five pairs of points (X,Y) that satisfy the equation Y=-2X+5 may be the following:

For X=0: Y=-2*0+5=5 (0,5)

For X=1: Y=-2*1+5=3 (1,3)

For X=2: Y=-2*2+5=1 (2,1)

For X=3: Y=-2*3+5=-1 (3,-1)

For X=4: Y=-2*4+5=-3 (4,-3)

The slope of the function is m=-2. Correct answer: C

5 0

3 years ago