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hichkok12 [17]
4 years ago
7

The diameter of a circle is 28 inches what is the circle's area? use 3.14 for pi

Mathematics
2 answers:
puteri [66]4 years ago
8 0

Answer:

Area = 615.44 inches

Step-by-step explanation:

Diameter = 2 * radius

28 = 2 * radius

Divide both sides of the equation by 2

14 = radius

Find area

A = π r²

A = 3.14 (14)²

A = 3.14 (196)

A = 615.44

Hope this helps :)

jolli1 [7]4 years ago
5 0

Answer:

615.75216....

Step-by-step explanation:

The formula is A = π * (ø/ 2)^2

A = Circle area

π = Pi = 3.14

ø = Circle diameter

A= 3.14  (28/2)^2

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Five hundred twelve people visited a ski resort last week. The resort hopes to triple the number of weekly visitors by advertisi
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Answer:

The resort wants 1,536 visitors each week.

Step-by-step explanation:

512 x 3 = 1536

Times three is like tripling.

7 0
3 years ago
Read 2 more answers
Determine the unknown measures of the triangle shown. Round to the nearest tenth, if necessary
lisabon 2012 [21]
Answers:
x = 25 in
y = 16.3°
z = 73.7°

Explanation:
Part (a): getting the value of x:
Since the given triangle is a right-angled triangle, we can get the value of x which is the hypotenuse of the triangle using the Pythagorean theorem as follows:
(hypotenuse)² = (side1)² + (side2)²
x² = (24)² + (7)²
x² = 625
x = √625
either x = 25 in ..........> accepted
or x = -25 in .........> rejected as side length cannot be negative.
Based on the above:
x = 25 in

Part (b): getting the value of y:
Since the given triangle is a right-angled triangle, therefore, special trigonometric functions can be applied.
These functions are as follows:
sin θ = opposite / hypotenuse
cos θ = adjacent / hypotenuse
tan θ = opposite / adjacent
In the given, we have:
θ = y
opposite side = 7 in
adjacent side = 24 in
Apply in the tan formula:
tan y = 7/24
y = 16.3° to the nearest tenth

Part (c): getting the value of z:
This can be solved in two ways:
Solution 1: Using angles
Sum on internal angles in a triangle is 180
90 + 16.3 + z = 180
z = 73.7°
Solution 2: Using special trig functions:
We have θ = z
opposite side = 24 in
adjacent side = 7 in
tan z = 24/7
z = 73.7° to the nearest tenth

Hope this helps :)
6 0
4 years ago
Thom’s restaurant bill is $45 and he leaves a 20 percent tip. What is the total cost for Thom’s meal?
VikaD [51]

Answer:

$54

Step-by-step explanation:

Convert 20% into decimal which is .20

$45x.20= $9

so 9 dollars was the tip. So you add the bill to the tip

$45+$9=$54

4 0
2 years ago
20 POINTS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
DerKrebs [107]
I cant understand could you make it clearer 
4 0
3 years ago
C
cupoosta [38]

Answer:

C

Step-by-step explanation:

8 0
3 years ago
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