What is the circumference of a circle with a diameter of 2 feet? use 3.14 for pie
2 answers:
<h3>Given :</h3>
what is the circumference of a circle with a diameter of 2 feet? use 3.14 for pie
A. 6.28ft
B. 12.56ft
C. 5.14ft
D.3.14ft
<h3>To Find :</h3>- The circumference of the circle
Formula for getting the circumference
<u>Given data</u> :
Diameter = 2 ft
π = 3.14
Radius = diameter/2 = 2 ft/2 = 1 ft
So the circumference is
- Circumference = 2πr
- Circumference = 2 × 3.14 × 1
- Circumference = 6.28 ft
<u>Therefore, the perimeter is 6.28 ft</u>
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Answer:
The amount of apples is the Xs and The cost is the Ys
Step-by-step explanation:
We can write,
n = inside triangle size
Label and explain grouping method :
I grouped the covered triangles, each had 3 colored tiles.
That were 3 sets,
3 * 3 = 9
Then I noticed the left over colored border tiles were the same amount as the inner triangles minus 1,
So,
The equation is,
9 + 3(n-1)
3 because triangles have 3 sides
A mathematical expression to represent grouping strategy :
9 + 3(n-1) or 9 + 3(x-4)
Number of green tiles,
= 9 + 3(8-1)
= 9 + 21
= 30
Let us assume, green colored triangles = 72
So,
We can write,
9 + 3(n-1) + (n x n) = 72
9 + 3(n-1) + = 72
+ 3n + 8 = 72
+ 3n = 66
+ 3n -66 = 0
Therefore,
The mathematical expression = 9 + 3(n-1)
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