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2 years ago

The diameter of a circle is 3 kilometers. What is the area?

Mathematics

2 answers:

user100 [1]2 years ago

6 0

Answer:

Step-by-step explanation:

hello :

the area is : πr² r : ridus r= 3km/2 = 1.5 km

so : the area is 3.14(1.5)² km² = 7.065 km²

lora16 [44]2 years ago

3 0

Answer:

7.068583471 km ^2

Step-by-step explanation:

pi x radius² is area

pi x 1.5² = the answer

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Iteru [2.4K]

I believe you do it like this:
1/2 Q+5/2
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3 years ago

Which is the longest? 100mm, 5cm,1/2m

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Step-by-step explanation:

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2 years ago

Find the total surface area of the cylinder shown. Leave the answer in terms of π. A cylinder with radius 4.25 inches and height

olga_2 [115]

Answer:

$87.125\pi in^{2} or 87\frac{1}{8}\pi in^{2}$

Step-by-step explanation:

Given Surface Area of Cylinder = $2\pi rh+2\pi r^{2}$ ,

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Let's Substitute r and h into the formula to find the total surface area.

Surface Area of Cylinder = $2\pi (4.25)(6)+2\pi (4.25)^{2} \\=51\pi +36.125\pi \\=87.125\pi in^{2} or 87\frac{1}{8} \pi in^{2}$

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1 year ago

A toy that was originally $35 is now marked down to $28. What percentage was the toy marked down to

Mkey [24]

Answer: 20% off

Step-by-step explanation:

35.00 times .20 = 7.00

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2 years ago

Find the value of x. Round your answer to the nearest tenth.

skad [1K]

Answer:

x = 9.7

Step-by-step explanation:

Reference angle (θ) = 68°

Opposite = 24

Adjacent = x

Apply, the trigonometric function, TOA which is:

$tan (/theta) = \frac{Opp}{Adj}$

Plug in the values

$tan 68 = \frac{24}{x}$

Multiply both sides by x

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Divide both sides by tan 68

$x = \frac{24}{tan 68}$

x = 9.69662942

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2 years ago