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denis23 [38]
3 years ago
13

I just need help with this

Mathematics
1 answer:
ella [17]3 years ago
8 0

The formula for area of a circle is: πr^2

r is half the diameter.

FE is the diameter: r = 20/2 = 10

Area of circle using FE = π10^2 = π * 100 = 314 square meters.

BE is a radius:

Area = π3.5^2 = π * 12.25 = 38.465  = 38.5 square cm ( rounded to nearest tenth).

AB is a radius:

Area = π11^2 = π * 121 = 379.94 = 380 square feet ( rounded off).

EF is a diameter

r = 12/2 = 6 meters

Area = π6^2 = π * 36 = 113.04 = 113 square meters ( rounded off).

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X+Y=100<br> 4.5X+20Y=822<br> Elimination, graphing,and substitution methods.
serious [3.7K]

Answer:

y=10

4 SX +20 Y= 822

Elimination

X - 10 -4

UX - 822-20Y

6.5

10 -4 = 822-201

45

- 4.5 = 822 - 204

15.54=774

4 = 90:13

= -40.129

4 0
4 years ago
At a local school supply store, a highlighter costs $1.25, a ballpoint pen costs $0.80, and a spiral notebook costs $2.75. Expla
egoroff_w [7]
Since the communative property shows you can add or multipy in any order, this means you can add all three of these in a different order and still get the same answer.....For example, you can do $1.25 + $0.80 + $2.75 or you can switch it around and do it in another way
4 0
4 years ago
An emergency patient is being seen today because of a lost "filling.” The dentist examines
saveliy_v [14]

A temporary dental material that would most likely be used to replace the lost filling be reinforced zinc oxide- eugenol composition.

A temporary restoration material is used to keep the patient comfortable for a short period of time. It <u>prevents the dislocation</u> of tooth and maintain functionality.

So, a <u>temporary dental material</u> that would most likely be used to replace the lost filling be reinforced zinc oxide- eugenol composition.

Learn more here:

brainly.com/question/23558592?referrer=searchResults

6 0
2 years ago
Need help please guys
Ierofanga [76]

Answer:

B.

Explanation:

π ≈ 3.142

22/7 ≈ 3.143

square root of ten ≈ 3.162

7 0
3 years ago
Read 2 more answers
This is math please help !!!!!!!
aev [14]

Answer:

Hello I'lll solve this problem.

Step-by-step explanation:

So the answer is actually C. I did the work.

3 0
3 years ago
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