3 years ago

Find the circumference of a circle that has a diameter of 4 m..

Mathematics

1 answer:

Gnesinka [82]3 years ago

6 0

If diameter = 4,

then radius = 4/2 = 2m.

Formula for the Circumference of a Circle = 2 $\pi$ r

2 $\pi$ r = 2 x 22/7 x 2

2 x 22/7 x 2 = 4 x 22/7 = 88/7

= 12.5714286 cm.

It can be also be rounded up into 12.6 cm.

So, the Circumference of the Circle is 12.6 cm or 12.5714286 cm.

You might be interested in

If the maker of the promissory note fails to pay the note on the due date,the note is said to be

Svetlanka [38]

Answer:

When the maker of a promissory note fails to pay, the note is said to be dishonored.

Step-by-step explanation:

5 0

3 years ago

Please help with scale factor!!!!!!!! I will mark brainliest if right! Two rectangular prisms have a side scale factor of 1/4. I

Agata [3.3K]

Answer:

1/16
720 cm²

Step-by-step explanation:

Area is the product of two dimensions.

If the scale factor is 1/4, the ratio of the areas will be:

(1/4)² = 1/16

The smaller prism has a surface are of 45 cm².

The larger prism has a surface area:

45*16 = 720 cm²

5 0

3 years ago

In the cafeteria, 80 juice boxes were put out for breakfast. After breakfast, there were 20 juice boxes left.

olchik [2.2K]

Answer:

The ratio of juice boxes remaining to juice boxes drunk = 20 / 60 = 1/3

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Brayden is going to invest in an account paying an interest rate of 4.3% compounded

Julli [10]

Answer:

810

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

The hypotenuse of a 45°-45°-90° triangle measures 18 cm. What is the length of one leg of the triangle?

lara31 [8.8K]

Answer:

The legs of a 45 45 90 triangle are congruent so if one leg is x we can write (using the Pythagorean Theorem):

x² + x² = 18²

2x² = 324

x² = 162

x = 9√2

4 0

3 years ago