+9479 Ah you can do these! I believe in you!
Just use these equations and plug in what you know:
radius = ½ × diameter
diameter = 2 × radius
circumference = 3.14 × diameter
area = 3.14 × radius2
1)
radius = 11 inches
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 × radius2 = 3.14 × 102 = 3.14 × 100 = 314 square feet
I hope this made sense!
Can you do the third one by yourself? It's almost identical to the first one.
+9479 Ah you can do these! I believe in you!
Just use these equations and plug in what you know:
radius = ½ × diameter
diameter = 2 × radius
circumference = 3.14 × diameter
area = 3.14 × radius2
1)
radius = 11 inches
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 × radius2 = 3.14 × 102 = 3.14 × 100 = 314 square feet
I hope this made sense!
Can you do the third one by yourself? It's almost identical to the first one.
V ...............................No.............i can't Do it.....................It's so hard ;-; .............. :|
+9479 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.
diameter = 2 × radius
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?
Help please
