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Hoochie [10]
3 years ago
8

Whats the área and circumference of a circle if the radius is 6in?

Mathematics
2 answers:
alina1380 [7]3 years ago
5 0

Answer:

Hello!

Area: 113.04

Circumference: 37.68

Hope this helps

Murljashka [212]3 years ago
4 0

Answer:

C≈37.7in

Step-by-step explanation:

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How to find the area of a polygon
ipn [44]
The rectangle is 7 x 4 so the area is 28 sq cm
The triangle has a base of 4 and a height of 3.
The formula is A = 1/2 * b*h
You have 2 triangles so:
2(1/2)*4*3= 12 sq cm
Add together:
28 + 12= 40 sq cm
6 0
3 years ago
If the DIAMETER of a circle is 18 inches, what is the length of the radius? *
bekas [8.4K]

Answer:

9 inches

Step-by-step explanation:

The radius is 1/2 of the diameter

r = d/2

r = 18/2 = 9

5 0
3 years ago
Read 2 more answers
A tunnel is built in form of a parabola. The width at the base of tunnel is 7 m. On
anastassius [24]

Given:

The width at the base of parabolic tunnel is 7 m.

The ceiling 3 m from each end of the base there are light fixtures.

The height to light fixtures is 4 m.

To find:

Whether it is possible a trailer truck carrying cars is 4 m wide and 2.8 m high is going to drive through the tunnel.

Solution:

The width at the base of tunnel is 7 m.

Let the graph of the parabola intersect the x-axis at x=0 and x=7. It means x and (x-7) are the factors of the height function.

The function of height is:

h(x)=ax(x-7)             ...(i)

Where, a is a constant.

The ceiling 3 m from each end of the base there are light fixtures and the height to light fixtures is 4 m. It means the graph of height function passes through the point (3,4).

Putting x=3 and h(x)=4 in (i), we get

4=a(3)((3)-7)

4=a(3)(-4)

\dfrac{4}{(3)(-4)}=a

-\dfrac{1}{3}=a

Putting a=-\dfrac{1}{3}, we get

h(x)=-\dfrac{1}{3}x(x-7)              ...(ii)

The center of the parabola is the midpoint of 0 and 7, i.e., 3.

The width of the truck is 4 m. If is passes through the center then the truck must m 2 m on the left side of the center and 2 m on the right side of the center.

2 m on the left side of the center is x=1.5.

A trailer truck carrying cars is 4 m wide and 2.8 m high is going to drive through the tunnel is possible if h(1.5) is greater than 2.8.

Putting x=1.5 in (ii), we get

h(1.5)=-\dfrac{1}{3}(1.5)(1.5-7)

h(1.5)=-(0.5)(-5.5)

h(1.5)=2.75

It is clear that h(1.5)<2.8, therefore the trailer truck carrying cars is 4 m wide and 2.8 m high is going to drive through the tunnel is not possible.

4 0
3 years ago
2| x-3| - 5 = 7 Helpp
klasskru [66]

Answer:

x = {9, -3}

Step-by-step explanation:

  • 2| x-3| - 5 = 7
  • 2| x-3|  = 12
  • | x-3| = 6
  • x - 3 = ± 6
  • ⇒ x= 3+ 6= 9
  • ⇒ x= 3 - 6= -3

Or it can be shown as:

  • x= {9, -3}

8 0
3 years ago
Read 2 more answers
Kendra’s xylophone is in the shape of the trapezoid shaken at the right. Describe any parallel,perpendicular, or congruent sides
Nookie1986 [14]
The left and right sides make up the parallel sides of the trapezoid.  The top and bottom would be congruent but not parallel.
6 0
3 years ago
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