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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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5√28+ √63<br> please simplify no exponents please

zaharov [31]

Answer:

34.3948

Step-by-step explanation:

$5\sqrt{28} +\sqrt{63} = 13\sqrt{7} = 34.3948$

3 0

2 years ago

Read 2 more answers

In 2015, eighty-seven babies per one thousand died before reaching one year of age. This figure is called the

k0ka [10]

In 2015, eighty-seven babies per one thousand died before reaching one year of age. This figure is called the infant mortality rate.

Infant mortality is defined as a child dying before turning one. The number of newborn deaths for every 1,000 live births is known as the infant mortality rate. The infant mortality rate is a significant indicator of the general health of a society in addition to providing us with valuable information on maternal and baby health. In the United States, there were 5.4 infant deaths for every 1,000 live births in 2020.

Learn more about infant mortality rate here: brainly.com/question/13493110

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8 0

1 year ago

Please help with this will give brainliest to the first answer!

kozerog [31]

Answer:

your answer is 415 in^3

Step-by-step explanation:

ok the equation in finding the volume of a come is

V= $\pi r^2 \frac{h}{3}$

step 1: plugin

$\pi =3.14$

3.14 x 6^2 x 11/3

3.14x 36 x 11/3 = (6/3 turns into a 2)

113.04x 11/3= 114. 48, when rounded, it's going to give you 415 in^3

5 0

1 year ago

I’m confused on this one

dedylja [7]

It's a parallelogram so if one angle is 90 degrees they all will be because of transverse angles and all that good stuff.

So we're given the diagonal of a rectangle and one side and we're asked to find the other. The diagonal of a rectangle is the hypotenuse of the right triangle whose legs are the sides of the rectangle. So this is a Pythagorean Theorem question in disguise:

$AB^2 + AD^2 = BD^2$