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Ipatiy [6.2K]
3 years ago
6

What is the area of a regular pentagon with 7 inch sides and an apothem of 3.9 inches?

Mathematics
1 answer:
Marrrta [24]3 years ago
8 0
A(n)=(ns^2)/(4tan(180/n)) in this case:

a=(5*49)/(4tan36)

a=84.3in^2
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yarga [219]

Answer:

500g Jelly beans $9.90

Step-by-step explanation:

To know the values.

Let's know how much a gram will cost in each case

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3 0
3 years ago
Find the length of the diameter of circle 0
r-ruslan [8.4K]

Answer:

Diameter = 19.33

Step-by-step explanation:

Imaging a radius line from O to the endpoints of the 7. call this line R.

Label the part of the vertical line from O to the 90 degree intersection y.

Now you have a right triangle.

Using the Pythagorean theorem:

R² = 7² + y²

also

y = R - 3

substitute for y:

R² = 49 + (R-3)²

R² = 49 + R² - 6R + 9

simplify:

0 = 58 - 6R

6R = 58

R = 9.6667

Diameter = 2(9.6667) = 19.33

5 0
2 years ago
In the number 2145857, how does the digit 5 in the thousands place compare to the digit 5 in the tens place?
fgiga [73]
It is 1,000 bigger than the one in the tens place. 5,000 compared to 50 
7 0
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Use calculus to find the area a of the triangle with the given vertices. (0, 0), (5, 1), (3, 6)
Natalka [10]
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3 years ago
Blueberries cost $2.65 per pound and you by 1.2 pounds how much do you pay
vichka [17]

Answer:

$3.18

Step-by-step explanation:

Multiply the cost by the amount bought.

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5 0
3 years ago
Read 2 more answers
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