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3 years ago

A circular lawn with a diameter of 20 square feet will be planted with grass seed. How many square feet are on the lawn?

Mathematics

2 answers:

insens350 [35]3 years ago

6 0

Answer:

314.159265359 ft squared or 314.16 ft squared rounded to the hundredths place. The closest result is option C.

Step-by-step explanation:

The formula for finding the area of a circle is A=π×r^2.

Step 1: Find the radius which is half of the diameter. In this case, the radius is 10 feet.

Step 2: Square the radius that you found. In this case, the number will be 100ft or 10^2.

Step 3: Multiple this number by π, or 3.14 if your teacher allows it. So in this case, 100×π=314.159265359 or 314.16 rounded to the hundredths place. If you use 3.14... the answer is 314.

Step 4: You've got your answer. Hope this helps!

ss7ja [257]3 years ago

4 0

Answer:

314 ft squared

Step-by-step explanation:

A = πr^2 = π · 102 ≈ 314.15927

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Find the length of the missing

Ivahew [28]

Answer:

Step-by-step explanation:

using pythagoras theorem

here 15 is hypotenuse since it is opposite 0f 90 degree

9 and x are the other smaller sides of a triangle

according to pythagoras thorem the sum of square of two smaller sides of a triangle is equal to the square of hypotenuse. So,

9^2 + x^2 = 15^2

81 + x^2 = 225

x^2 = 225 - 81

x^2 = 144

x = $\sqrt{144$

x = 12

5 0

2 years ago

Read 2 more answers

I have no idea how to do this, pls help. Question in the picture. Please show your work. Thanks!

geniusboy [140]

Answer:

Step-by-step explanation:

This is a stem and leaf plot. If you don't know what a stem and leaf plot is, try searching it before coming back and viewing the solution. I also see an "example" button. It might help to hit that too.

First, we sort the list of numbers. Here is what we get:

64, 66, 67, 68, 69, 74, 75, 76, 78, 79

Here, the stems are the tens digits and the leaves are the ones digits.

Therefore, for the stem 6, the leaves are:

4, 6, 7, 8, 9

For the stem 7, the leaves are:

4, 5, 6, 8, 9

The answer, I believe, is C

4 0

2 years ago

The sum of two numbers is 72 and their difference is 26. find two numbers?

Archy [21]

9514 1404 393

Answer:

23, 49

Step-by-step explanation:

Let s represent the smaller of the two numbers. Then the larger is s+26, and the sum is ...

s + (s+26) = 72

2s = 72 -26

s = (72 -26)/2 = 23

Then the larger number is

s +26 = 49

The two numbers are 23 and 49.

_____

The reason we wrote the solution this way is to show you that the smaller number is half the difference between the given sum (72) and difference (26). This is the generic solution to a "sum and difference" problem. The smaller number is always half the difference of the give sum and difference. (Similarly, the larger is always half the sum of the given sum and difference.)

That is, the two numbers are always half the sum ± half the difference:

72/2 ± 26/2 = {36+13, 36-13} = {49, 23}

7 0

2 years ago

What is the area of the figure?

Alla [95]

B. 36
because if you find the area of the big square its 5×6 and the smaller rectangle is 3×2
so its 30+6
36

3 0

3 years ago

Find the inverse of the function r(t)=5t.

Sveta_85 [38]

Answer:

Log5 t I believe

Step-by-step explanation:

.-.

7 0

3 years ago