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3 years ago

What is the area of a circle with a radius of 2.1cm? Use 3.14 for π.

Mathematics

2 answers:

tester [92]3 years ago

8 0

Answer:

A= 13.8474

Step-by-step explanation:

The formula for the area of a circle is A= πr^2 (pi times r, or radius, squared).

So if you insert the values into the formula you have....

A= 3.14(2.1 cm)^2

You can use a calculator from there to get....

A= 13.8474

saul85 [17]3 years ago

3 0

Answer: I got's you lol

A≈13.85cm²

And the radius is 2.1

Step-by-step explanation:

Hope this helps let me know :)

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A cooler at a picnic contains 100 cans of soda covered by ice. There are 34 cans of cola, 50 cans of orange soda, 12 cans of g

andriy [413]

Answer:

P = 1/2 = 0.5

Step-by-step explanation:

Total amount of cans = 100

Cans of cola = 34

Cans of orange soda = 50

Cans of ginger ale = 12

Cans of root beer = 4

Probability of selecting

- a can of cola = 34/100 = 0.34

- a can of orange soda = 50/100 = 0.5

- a can of ginger ale = 12/100 = 0.12

- a can of root beer = 4/100 = 0.04

Since we are asked the probability that the can selected is a root beer, cola, or ginger ale, we need to add together the probabilities of each.

P = 0.04 + 0.34 + 0.12 = 0.5 = 1/2

6 0

3 years ago

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Neporo4naja [7]

All I know is 5 and 6.

5. -7 (the picture is the model to draw)
6. -5

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3 years ago

HELP ME PLEASE!!!!

horsena [70]

$2\sqrt5+3\sqrt5-\sqrt5=(2+3-1)\sqrt5=4\sqrt5\\\\\text{Answer:}\ 4\sqrt5$
Look at the square root like "x", then
$2\sqrt5+3\sqrt5-\sqrt5=/2x+3x-x=4x/=4\sqrt5$

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3 years ago

Measure of angle A???

Rudik [331]

Answer:

Step-by-step explanation:

The triangle shown has all 3 sides equal in length, hence it is an equilateral triangle.

A property of equilateral triangles is the angles are congruent.

The sum of the 3 angles = 180°, hence the measure of each angle is

$\frac{180}{3}$ = 60° → A