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denis23 [38]
3 years ago
5

Plz help. Find the perimeter of the window to the nearest tenth.

Mathematics
2 answers:
Irina-Kira [14]3 years ago
8 0

Answer:

20 x 3.14 divide by 2

Step-by-step explanation:

Stels [109]3 years ago
4 0
Let's solve this problem step-by-step.

STEP-BY-STEP EXPLANATION:

First, we will establish that the shape of the window is a semi-circle. This means we must use the formula for the perimeter of a semi-circle to obtain the perimeter of the window.

The formula for the perimeter of a semi-circle is as follows:

Let perimeter of window or semi-circle = P

P = [ 2( Pi )r / 2 ] + 2r

Where r = radius of circle or semi-circle

From this, we will simply use the value of the radius given from the diagram in the problem and substitute it into the formula to obtain the perimeter of the window.

P = [ 2( Pi )r / 2 ] + 2r

r = 20

THEREFORE:

P = [ 2( Pi )( 20 ) / 2 ] + 2( 20 )

P = 20( Pi ) + 40

P = 102.83...cm^2

P = 102.8cm^2 ( to the nearest tenth )

FINAL ANSWER:

Therefore, the perimeter of the window is 102.8cm^2 ( to the nearest tenth ).

Hope this helps! :)
Have a lovely day! <3
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find the area of a right angle triangle whose hypotenuse is 13 cm long and one of its legs is 12 cm long​
Lelu [443]

Answer:

30 cm^2

Step-by-step explanation:

a = 13 cm

b = 12 cm

using Pythagorean theorem:

a^2 = b^2 + c^2

--> c^2 = a^2 - b^2 = 13^2 - 12^2 = 169 - 144 = 25

--> c = √25 = 5

The area of that right triangle is:

S = b.c / 2 = 12 . 5 / 2 = 30 (cm^2)

6 0
2 years ago
Find the total capacity of 50 containers of orange juice if container holds 1 gallon 2 quarts 1 pint.
Scorpion4ik [409]
I think its 81 gallons 1 quart

7 0
3 years ago
Read 2 more answers
Tommy's mom gave him $50 for cutting their grass. He used the money to buy a game for $15.75 and two snacks that cost $1.50 each
Alborosie

Answer:

a = $17.25

Step-by-step explanation:

let the money spend on the necklace be a

we have

15.75 +1.5*2 +a + 14 = 50

-> a = 50 -15.75 -3-14

-> a = $17.25

8 0
3 years ago
Out of the 40 students in the 7th grade class, 60% of the students carry a cell phone. What fraction of the students in the 7th
xz_007 [3.2K]

Answer:

Fraction of the students in the 7th grade class carry a cell phone = 3/5

24 students carry a cell phone


Step-by-step explanation:

40 students in the 7th grade, 60% of the students carry a cell phone.

so 40 x 0.6 = 24 students carry a cell phone

24/40 = 3/5

8 0
2 years ago
Read 2 more answers
Please help I will mark brainlist if correct
MakcuM [25]

The admission fee at a fair is $2.00 for children and $4.00 for adults.

On Saturday 2,500 people entered the fair and $7,000.00 were collected.

How many children and how many adults attended? Give your answer, using x for children, y for adults.

Form of: x =, and y =

 

Let K = no. of children

Let A = no. of adults

 

2500 people mean

Kids + Adults

 

K + A = 2500

K = 2500 – A

 

2K + 4A = 7000

K + 2A = 3500

 

(2500 – A) + 2A = 3500

A = 3500 – 2500

(A = 1000, adults)

 

K = 2500 – A

K = 2500 -1000

(K = 1500, Kids)

 

CHECK:

1500*2 = $3000

1000*4 = $4000

<span>(Total = $7000, people.). </span>

<span>
</span>

<span>Hope this helps:</span>

6 0
3 years ago
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