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3 years ago

Surface area help please❤️

Mathematics

1 answer:

Rus_ich [418]3 years ago

6 0

The answer is D because it 172.8 cm

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Holly is trying to get the best deal for her money. The pizza shop is offering two pizzas for the same price. The round one is 1

patriot [66]

Answer:

Step-by-step explanation:

The pizza shop is offering two pizzas for the same price.

The round one is 12 inches in diameter. To know the size of the round pizza, we will determine its area. It is the same as the area of a circle which is expressed as

Area = πr^2

Radius, r = diameter /2 = 12/2 = 6 inches.

π = 3.14

Area = 3.14 × 6^2 = 3.14 × 36 = 113.04 inches square.

To know the size of the square pizza, we will apply the formula for a square

Area = l^2

Since one side is 10 inches,

The area is 10.5 × 10.5 = 110.25 inches square.

It means that the round pizza is bigger. She should by the round pizza

8 0

4 years ago

Help me please,Thanks

maxonik [38]

<span>Anna learns in her science class that the human eye blinks an average of 4,200,000 times a year. What is this number expressed in scientific notation?</span>

6 0

4 years ago

A blender was originally sold for $90 and has been marked down to $79.20. What is the percentage of discount for the blender

attashe74 [19]

Answer:

12%

Step-by-step explanation:

Percentage discount

$= \frac{discount}{original \: price} \times 100\% \\ = \frac{90 - 79.20}{90} \times 100\% \\ = 12\%$

☆ Discount= original price -marked price

5 0

3 years ago

In ΔMNO, the measure of ∠O=90°, the measure of ∠M=11°, and NO = 5.9 feet. Find the length of OM to the nearest tenth of a foot.

Aleonysh [2.5K]

Answer:5-]2u0972=071-984622324rt1yuiouytrewqwertyuiop[]

Step-by-step explanation:

6 0

3 years ago

Solve (2/3)-(1/x)=5/6

Keith_Richards [23]

$\frac{2}{3} - \frac{1}{x} = \frac{5}{6}$ Multiply both sides by 3
$2 - \frac{1(3)}{x} = \frac{5(3)}{6}$ Simplify the numerators
$2 - \frac{3}{x} = \frac{15}{6}$ Multiply both sides by 6
$12 - \frac{3(6)}{x} = 15$ Simplify the numerator
$12 - \frac{18}{x} = 15$ Multiply both sides by x
12x - 18 = 15x Subtract 12x from both sides
-18 = 3x Divide both sides by 3
-6 = x Switch the sides to make it easier to read
x = -6

Check your answer by plugging -6 in for the x in the original problem:

$\frac{2}{3} - \frac{1}{x} = \frac{5}{6}$ Plug in -6 for x
$\frac{2}{3} - \frac{1}{-6} = \frac{5}{6}$ Change $\frac{2}{3}$ to $\frac{4}{6}$ so all denominators are the same
$\frac{4}{6} - \frac{1}{-6} = \frac{5}{6}$ Change $\frac{1}{-6}$ to $\frac{-1}{6}$ for easier work
$\frac{4}{6} - \frac{-1}{6} = \frac{5}{6}$ Subtract the numerators (4 - (-1) )
$\frac{5}{6}$ = $\frac{5}{6}$

So, x = -6 .

5 0

3 years ago