+0

0
118
3

working on this for weeeeksss

Guest Mar 14, 2017

#1
+5555
+6

Ah you can do these! I believe in you!

Just use these equations and plug in what you know:

circumference = 3.14 × diameter

1)

diameter = 2 × radius = 2 × 11 = 22 inches

circumference = 3.14 × diameter = 3.14 × 22 = 69.08 inches

area = 3.14 × 112 = 3.14 × 121 = 379.94 square inches

2)

radius = ½ × diameter = ½ × 20 = 10 feet

diameter = 20 feet

circumference = 3.14 × diameter = 3.14 × 20 = 62.8 feet

area = 3.14 × radius= 3.14 × 102 = 3.14 × 100 = 314 square feet

Can you do the third one by yourself? It's almost identical to the first one.

hectictar  Mar 14, 2017
Sort:

#1
+5555
+6

Ah you can do these! I believe in you!

Just use these equations and plug in what you know:

circumference = 3.14 × diameter

1)

diameter = 2 × radius = 2 × 11 = 22 inches

circumference = 3.14 × diameter = 3.14 × 22 = 69.08 inches

area = 3.14 × 112 = 3.14 × 121 = 379.94 square inches

2)

radius = ½ × diameter = ½ × 20 = 10 feet

diameter = 20 feet

circumference = 3.14 × diameter = 3.14 × 20 = 62.8 feet

area = 3.14 × radius= 3.14 × 102 = 3.14 × 100 = 314 square feet

Can you do the third one by yourself? It's almost identical to the first one.

hectictar  Mar 14, 2017
#2
0

V ...............................No.............i can't Do it.....................It's so hard ;-;  ..............   :|

Guest Mar 14, 2017
#3
+5555
+6

Well let's look at the third one.

They tell us that the radius is 19 yards.

So how can we find the diameter?

Look at the equation for diameter.

Oh, but we know what the radius is!

So let's replace the word "radius" with what we know the radius is, 19 yards.

diameter = 2 × 19 yards

Now just grab your calculator and type in, "2 × 19." Whatever you get is the diameter.

diameter = 38 yards

Does that make any sense?

hectictar  Mar 14, 2017

### 15 Online Users

We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.  See details