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3 years ago

What is the area of a circle with a radius of 5 cm?

Mathematics

1 answer:

Morgarella [4.7K]3 years ago

4 0

Answer:

area of circle = 78.55 cm²

Step-by-step explanation:

area of circle

= πr²

= 3.142 × 5²

= 3.142 × 25

= 78.55 cm²

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Plz help me. I need your help

brilliants [131]

Step-by-step explanation:

a mother is a she, not a he ...

anyway, we need to make 2/3 and 3/4 comparable.

for this we need to bring both fractions to a common denominator, which is usually the smallest common multiple of the denominators.

yes, 12 is the smallest number that can be divided by 3 and by 4 without remainder.

to transform a fraction too another denominator, we need to multiply it by a fraction a/a, which has the value 1, of course (so we don't change the value of the original fraction), but changes the denominator to the desired number.

what do I multiply with 4 to get 12 ? 3.

so, I multiply 3/4 by 3/3 = 9/12.

what do I multiply with 3 to get 12 ? 4.

so, I multiply 2/3 by 4/4 = 8/12.

now we can compare and calculate :

out of the total of 9/12kg 8/12kg were used.

that means

1/12kg of carrots are left.

this is a strange question, as watermelons, bananas and melons are very differently sized. so, for example 1/2 watermelon and 1/2 banana are very different quantities.

so, what does e.g. 1 fruit mean ?

or if we understand the fractions as shares of the overall smoothie, then we have too much. 4/6 (watermelon) + 2/6 (melon) = 6/6 = 1 (whole smoothie).

so, what to do with the banana ?

this question does not make any sense at all.

but if it is just to add fractions, we can do that :

4/6 + 1/2 + 2/6

as mentioned above, 4/6 + 2/6 = 6/6 = 1

1 + 1/2 = 2/2 + 1/2 = 3/2 = 1.5 or 1 1/2

so there is 1 1/2 fruit in the smoothie (whatever that means).

1 1/2 + 2 1/2 = 2/2 + 1/2 + 4/2 + 1/2 = 8/2 = 4

in total, there are 4 cups of sugar needed.

3 0

3 years ago

in chemical formulas, there are often subscript numbers (such as the 2 in h2o, or the 6, 12, and 6 in c6h12o6). what do these su

Gnesinka [82]

In a Chemical formula, Subscript figures tell us how numerous of the element to their upper-left there are in the patch.

What is a chemical formula?

In chemistry, a chemical formula is a way of presenting information about the chemical proportions of titles that constitute a particular chemical emulsion or patch, using chemical element symbols, figures, and occasionally also other symbols, similar as hiatuses, dashes, classes, commas, and plus() and disadvantage( −) signs.
These are limited to a single typographic line of symbols, which may include subscripts and subtitles.
A chemical formula may indicate certain simple chemical structures, it isn't the same as a full chemical structural formula.

The subscript number indicates the total number of titles of an element present in a patch.

While witting a chemical formula, first we've to write the symbol of an element and also write the number at the bottom of the symbol.

For illustration,

$C_6H_{12}O_6$ is the chemical formula of the glucose patch. The glucose patch is made up of six carbon titles, twelve hydrogen titles, and 6 oxygen titles.

The number 6 of the carbon snippet is written after and at the bottom ( lower- right) of the symbol of carbon element (C). also, the number 12 is written lower-right of the symbol of hydrogen element (H), and the number 6 is written lower-right of the symbol of oxygen element( O).

thus, the subscript figures tell us how numerous of the element to their upper-left there are in the patch.

Learn more about subscript here:

brainly.com/question/18452587

#SPJ4

4 0

2 years ago

Paul, Joey, and Matt have to catch the train back to school at 5:00pm. They want to tour the air and space museum for 1 hour and

Zigmanuir [339]

Answer:

2:25pm

Step-by-step explanation:

The time given is 5pm to catch the train back to school;

Amount of time for the tour = 1hr 45min

= 105min

Amount of time at gift shop = 30min

Amount of time to save = 20min

Total time = 105min + 30min + 20min = 155min

So;

Total time = 2hr 35min

So;

5pm - 2hr 35min = 2:25pm

3 0

3 years ago

Which number sentence is true?

aliya0001 [1]

The answer is A) 1,73<2,1

3 0

3 years ago

A pair of equations which has a unique solution x=2 y=-3

nignag [31]

x=2, y=3 is a pair of a equations right there, so a correct solution.

How about another linear system?

Answer: x+y=5, 10x + y = 23

8 0

4 years ago