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2 years ago

Please help me as fast as you can PLEASE

Mathematics

1 answer:

e-lub [12.9K]2 years ago

6 0

Answer:

Step-by-step explanation:

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A building engineer analyzes a concrete column with a circular cross section. The circumference of the column is 18 \pi18π18, pi

katrin [286]

The area of the cross section of the column is $18 \pi \ m^2$

Explanation:

Given that a building engineer analyzes a concrete column with a circular cross section.

Also, given that the circumference of the column is $18 \pi$ meters.

We need to determine the area of the cross section of the column.

The area of the cross section of the column can be determined using the formula,

$Area= \pi r^2$

First, we shall determine the value of the radius r.

Since, given that circumference is $18 \pi$ meters.

We have,

$2 \pi r=18 \pi$

$r=9$

Thus, the radius is $r=9$

Now, substituting the value $r=9$ in the formula $Area= \pi r^2$ , we get,

$Area = \pi (9)^2$

$Area = 81 \pi$

Thus, the area of the cross section of the column is $18 \pi \ m^2$

5 0

3 years ago

Please help the best answer I'll give brainliest

ad-work [718]

X intercept is 5, 13 y is 5, -13

8 0

2 years ago

If the measure of a central angle is 213 degrees, then the measure of the arc it intercepts is

Leto [7]

Answer:

$\Delta s = \frac{71\pi}{60}\cdot r$

Step-by-step explanation:

Let r be the radius of the circle, the measure of the arc is equal to:

$\Delta s = \frac{213^{\circ}}{360^{\circ}}\cdot 2\pi \cdot r$

$\Delta s = \frac{71\pi}{60}\cdot r$

8 0

3 years ago

What is the order of rotational symmetry for a mombus?<br> 0<br> 1

Elan Coil [88]

Answer: order 2

Step-by-step explanation:

7 0

3 years ago

8) HELP PLEASE ILL GIVE BRAINLIEST!! Find the median of the set of data.(Remember to put the

crimeas [40]

The median is 7.

——————————

Arrange data in numerical order

1 3 3 6 8 10 10 15

Total number are 8, N = 8

Take the middle two numbers 6 and 8 and take their average

6+8/2 = 14/2 = 7

Therefore the median is 7.

3 0

2 years ago