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zhannawk [14.2K]
3 years ago
9

A plate has a diameter of 4 inches . What is the area of the plate ?

Mathematics
2 answers:
sasho [114]3 years ago
8 0

Answer:

A≈12.57in²

Step-by-step explanation:

Using the formulas

A=πr2

d=2r

Solving forA

A=1/ 4πd^2=1/ 4·π·4^2≈12.56637in²

A≈12.57in²

igor_vitrenko [27]3 years ago
6 0

Answer:

12.56 inches^2

Step-by-step explanation:

To solve this we use pi*r^2

Radius is diameter/2

so the equation is pi*2^2

pi*4

12.56 inches^2

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5. Find m (5x- 2)<br> (9x - 62)
erma4kov [3.2K]

Answer:

73

Step-by-step explanation:

(9x - 62)

(9(15) - 62) =

(135 - 62) =

(73)

<u>m∠KJL </u>= 73

5 0
3 years ago
If five slices of pizza cost $5.50, how much do two slices cost? Ten slices? Half a slice?
Norma-Jean [14]

Answer:

2.2, 11 and 0.55

Step-by-step explanation:

5.50÷5= 1.1 then multiply by 2,10 and half

3 0
3 years ago
Heres the answer l.m.a.o
torisob [31]

Answer:

That's a solid answer there.

Step-by-step explanation:

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4 0
3 years ago
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What is 25% Of 30% Of 400?
marta [7]

Answer:

25% of 30% of 400 = 30

33% decrease in value

Step-by-step explanation:

You can either get 30% of 400 first then 25% of 400 or you can get the total percentage of 400.

Method 1:

30% of 400 = 0.3 of 400 = 0.3 * 400 = 120

25% of 120 = .25 of 120 = .25 * 120 = 30

Method 2:

30% of 25% = 0.3 * 0.25 = 0.075 = 7.5% of 400

7.5% of 400 = 0.075 of 400 = 0.075 * 400 = 30

5.) To find the percentage  of the new price, you can build the equation below.

\frac{new price}{original price} = \frac{percent}{100}

\frac{200,000}{300,000}  = \frac{x}{100}

20,000,000 = 300,000x

x = 66.667

The percentage decrease in price is then 100% of the original price - 66.667% of the original price = 100% - 66.67% = 33.33% = 33% decrease.

3 0
3 years ago
The ratio of length to width in a rectangle is 3 to 1. If the perimeter of the rectangle is 128 feet, what is the length of the
Serga [27]

Answer: B

Step-by-step explanation:

7 0
3 years ago
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