3 years ago

In a circle, a 90° sector has area 16π ft2. What is the radius of the circle?

1 answer:

7 0

Sector area = 0.5 * r^2 * angle (in radians)

so:

16 pi = 0.5 * r^2 * (90*pi/180)

r^2 = 16 pi /(0.25 pi) = 64

r = 8

therefore it would be d

You might be interested in

What decimal is equivalent to 15 198/200?

IrinaK [193]

It's equivalent to 75.99

8 0

3 years ago

player B's longest home run distance is 500 ft.There are 5280 ft in 1 mile. How many home runs would player B need to hit at his

zhenek [66]

11, 500 • 11 = 5,500
Hope this helps! Let me know if you need any further assistance!

6 0

3 years ago

How many liters are equal to 3,167 milliliters? Use the placement of the decimal point when dividing by a power of 10 to help yo

Marrrta [24]

Answer:

3.167 liters

Step-by-step explanation:

1 liter = 1,000 milliliters

3,167 milliliters * 1liter/1,000milliliters = 3.167 liters

3 0

3 years ago

The length of a concrete slab is three more than three times the width. It's area is 330 square feet. What is the length of the

marin [14]

Answer:

Width: 10.5 feet

Length: 31.5 feet

Step-by-step explanation:

Let x represent width of the concrete slab.

We have been given that the length of a concrete slab is three more than three times the width. So length of the slab would be $3x$ .

We are also told that the area of slab is 330 square feet. We can represent this information in an equation as:

$x\cdot 3x=330$

$3x^2=330$

$x^2=\frac{330}{3}$

$x^2=110$

Now, we will take square root of both sides.

$\sqrt{x^2}=\sqrt{110}$

$x=10.488\approx 10.5$

Therefore, the width of slab is approximately 10.5 feet.

The length of the slab would be $3x\Rightarrow3(10.5)=31.5$ .

Therefore, the length of slab is approximately 31.5 feet.

6 0

3 years ago

Read 2 more answers

A CD player holds 5 CDs, and each disc has 12 songs. If the CDs are changed randomly, find the probability that your favourite s

almond37 [142]

Answer:

1/(5*12) = 1/60 = .016 = 1.6%

Step-by-step explanation:

7 0

3 years ago