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Phantasy [73]
3 years ago
10

Find the area of the regular decagon if the apothem is 2.8 ft. and a side is 1.8 ft. Round to the nearest whole number.

Mathematics
1 answer:
Ghella [55]3 years ago
3 0
Perimeter = 1.8 * 10 = 18
Area = (1/2)(perimeter)(apothem)
Area = (1/2)(18)(2.8)
Area = 25.2
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Answer:

436.96

Step-by-step explanation:

Using the compoybd interest formula A=P(1+R÷N)^nt

A= Final amount 436.96

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r= interest rate 4%

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Help me with this (I'll give brainly- or what ever its called)
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Picture A.

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5 0
3 years ago
A) 1.0 mile <br>b) 5.0 mile <br>c) 5.8 mile <br>d) 0.8 mile ​
nordsb [41]

Answer:

d) 0.8 mile

Step-by-step explanation:

Coordinate of object B = (6, 6)

Coordinate of object C = (1, 4)

Coordinate of the archaeologist = (6, 1)

✍️Distance between Object B (6, 6) and the archaeologist (6, 1):

Distance = |6 - 1| = 5 units = 5 miles

✍️Distance between Object C (1, 4) and the archaeologist (6, 1):

Using the distance formula, d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}, we would have:

d = \sqrt{(6 - 1)^2 + (1 - 4)^2}

d = \sqrt{(5)^2 + (-3)^2}

d = \sqrt{25 + 9}

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Comparing how far each object is from the archaeologist, object C is 0.8 mile (5.8 - 5 = 0.8) farther than object B.

3 0
3 years ago
A 96-ft high transmission tower casts a 72-ft long shadow. An anchor wire runs from the top of the tower to the tip of the shado
galben [10]
See attached picture and check solution below.
We are given with the following values:
A = length of transmission line = 96ft
B = length of shadow = 72 feet
C = distance of ladder to base of transmission line = 66 feet

Solve for angle created between the wire and tip of the shadow:
tan x = opposite/ adjacent
tan x = 96 feet / 72 feet
x = 53.13°

Solving for the height of the ladder:
tan x = Ladder length / (72-66)
tan 53.13° * (72-66) = ladder length
ladder length = 8 feet

The answer is letter "B" which is 8 feet.


 

5 0
4 years ago
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