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3 years ago

The area of a circle is 113.04cm^2 find the radius

Mathematics

1 answer:

Mrrafil [7]3 years ago

3 0

A = pi times r^2
113.04 = pi times r^2
35.98 = r^2
5.99 = r or about 6

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A bag has 13 marbles in it. Seven of them are green, two of them are red, three of them are yellow, and one of them is blue. If

Inessa [10]

Answer:

The answer is c .85

Step-by-step explanation:

1. marbles that are not red/ total marbles

2. 11/13

3. 11/13= .846

4. .846 is rounded up to .85

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3 years ago

A forest fire covers twice the amount of forest as it did 3 days ago. 3 days ago, this fire covered 300 square miles and it cont

alisha [4.7K]

Answer:

The correct option is B) 4800 square miles.

Step-by-step explanation:

Consider the provided information.

It is given that the fire covered 300 square miles in 3 days ago. And it continues to grow at the same rate.

Therefore, today it covers the twice of area it covers on yesterday.

The area covers by fire 2×300=600 square miles

Now the area covers after 3 days from today will be:

2×2×300 = 2×600 = 1200 square miles

The area covers after 3×2=6 days from today is:

2×2×2×300 = 2400 square miles

The area covers after 3×3=9 days from today is:

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Hence, the correct option is B) 4800 square miles.

HOPE DIS HELPS MARK ME AS BRAINLIEST PLS!!!!

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4 years ago

Help pls I will give you 15 point

Komok [63]

Answer:

its c

Step-by-step explanation:

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3 years ago

: If tan A=- 9/13 and 0 < A < 180, find, without using tables or calculators, the value of

stich3 [128]

Answer: $\bold{\sin A=\dfrac{9\sqrt{10}}{50}\qquad \cos A=-\dfrac{13\sqrt{10}}{50}}$

<u>Step-by-step explanation:</u>

0° < A < 180° so it is in Quadrant I or II

since tan A is negative, it is in Quadrant II ---> (-x, +y)

$\text{Given}:\tan A=\dfrac{y}{x}\ =\dfrac{9}{-13}$

Next, find the hypotenuse given that x = -13 and y = 9

(-13)² + (9)² = r²

250 = r²

5√10 = r

$\sin A = \dfrac{y}{r}\quad =\dfrac{9}{5\sqrt{10}}\bigg(\dfrac{\sqrt{10}}{\sqrt{10}}\bigg)\quad =\large\boxed{\dfrac{9\sqrt{10}}{50}}\\\\\\\\\cos A = \dfrac{x}{r}\quad =\dfrac{-13}{5\sqrt{10}}\bigg(\dfrac{\sqrt{10}}{\sqrt{10}}\bigg)\quad =\large\boxed{-\dfrac{13\sqrt{10}}{50}}$

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3 years ago

Explain the difference between perimeter and area. What do they measure? What types of units are they measured in? NEED ANSWER S

kirill115 [55]

First the difference between the perimeter and area is that area is the amount of space inside a shape, and perimeter is the distance around the shape
^thats what they measure
And since perimeter is a length or distance, the unit of measure is inches, feet, yards, or miles. The area is usually found by doing l x w
Hope this helped

5 0

4 years ago