$A=\frac{\theta}{360}*\pi r^2$ where theta is the measure of the central angle (which is the same measure as that of the arc that is intercepted by the 2 radii formig the angle), and r is the radius.

For us, theta is 90 degrees and r is 20. Filling in the formula:

$A=\frac{90}{360}*(3.14)(20)^2$ which simplifies down a bit to

$A=\frac{1256}{4}$ so

A = 314 m squared

5 0

4 years ago

15) Victor drove 520 miles in 8 hours. At this rate how long will it take him to travel

nevsk [136]

Answer:17hrs

Step-by-step explanation:

520/8=65

1105/65

6 0

3 years ago

Solve the equation A = bh for b.

Brilliant_brown [7]

Answer:

You have to divide both sides by h, in order to make b the subject :

$A = bh$

$A \div h = bh \div h$

$\frac{A}{h} = bh \times \frac{1}{h}$

$\frac{A}{h} = b$

$b = \frac{A}{h}$

5 0

4 years ago

Read 2 more answers

Find the area of the shaded region. Round to the nearest tenth.

umka21 [38]

Answer: 2,827.43

Step-by-step explanation:

6 0

3 years ago