All categories

4 years ago

I have the formula A fraction • π r^2

Mathematics

1 answer:

MatroZZZ [7]4 years ago

4 0

Answer:

22.2 ft²

Step-by-step explanation:

The area (A) of a sector is calculated as

A = area of circle × fraction of circle

= πr² × $\frac{50}{360}$

= π × 7.13² × $\frac{5}{36}$

= $\frac{7.13^2(5)\pi }{36}$ ≈ 22.2 ft² ( nearest tenth )

You might be interested in

Leah knit a scarf that is 130 centimeters long, Theo knit a scarf that is 4/3 as long

Delvig [45]

Answer: Theo's scarf is 173 + 1/3 centimeters long.

Step-by-step explanation:

The scarf of Leah is 130 centimeters long.

The one of Theo is 4/3 as long as the one of Leah, then we have that the length of the scarf of Theo is:

Lenght = (4/3)*130 cm =(4*130)/3 cm =520/3 cm

Now, we know that if all the digits of a number add up to a multiple of 3, that number is divisible by 3.

520/3 = (519 + 1)/3 = 519/3 + 1/3 = 173 + 1/3

Theo's scarf is 173 + 1/3 centimeters long.

3 0

3 years ago

In December yanni’s chocolate shop received 180 telephone orders. In January they received only 72 telephone orders. By what per

Korvikt [17]

Answer:

it was a 40% decrease

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Solve the problem.When exposed to ethylene gas, green bananas will ripen at an accelerated rate. The number of days for ripening

Alex Ar [27]

The table and the plotted data are in the attachment.

Answer and Step-by-step explanation: A line of best fit is the best approximation of the given data. It is used to show the relation of two variables and it can be determined, more accurately, by the Least Square Method.

To use the method, follow the steps:

1) Calculate the mean of the two variables:

$X = \frac{\Sigma x_{i}}{n}$

$Y=\frac{\Sigma y_{i}}{n}$

2) The Slope of the line is given by:

$m=\frac{\Sigma (x_{i}-X)(y_{i}-Y)}{\Sigma (x_{i}-X)^{2}}$

3) The y-intercept is found by the formula:

$b=Y-mX$

For the ripening of bananas, the least square method gives the line:

y = -0.142x + 5.56

The rate of change of a line equation is its slope, so

Rate of change = -0.14

The rate of change of ripening time with respect to exposure time is -0.14, which means the more expose the fruit is, the less time it needs to ripe.

Download pdf

7 0

3 years ago

1/2x - 5 + 2/3 = 7/6x + 4

valina [46]

Exact form:-25/2
decimal form: -12.5
mixed number form:-12 1/2

3 0

2 years ago

Can someone help me with 3 n 4

storchak [24]

Answer:

What's the question??

Step-by-step explanation:

3 0

3 years ago