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GalinKa [24]
3 years ago
15

A rectangle has a perimeter 60m and base21 m what is its area

Mathematics
1 answer:
Komok [63]3 years ago
5 0

Since you're given the base for the perimeter of the rectangle, you can solve this question quickly.

First, you multiply 21 by 2, because there are two bases to a rectangle.

You'll get 42, and you will have to do 60-42 to find the perimeter for the remaining two sides.

60-42 will give you 18, so you can divide that by 2 because there are two other sides, giving you 9.

Now you have the side lengths 21 and 9. Area is base*height, so you can multiply 21*9 and get 189.

Therefore, the area of the rectangle is 189 meters

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GEOMETRY- FIND POLYGON AREA
Dvinal [7]

Answer:

Step-by-step explanation:

The area of a regular polygon is

A=\frac{1}{2}ap where a is the apothem and p is the perimeter. Perimeter is simple: just count the number of sides the polygon has and multiply it by 3 (the length of one side).

p = 3(9) is 27 inches for the perimeter.

We have what we need now to find the area:

A=\frac{1}{2}(4.1)(27) and

A=\frac{1}{2}( 110.7) so

A = 55.35 square inches

5 0
2 years ago
A person is running a distance race at a constant rate. What time will they finish the race what information would you need to b
Zinaida [17]

Answer:

you need the distance they're running and the pace they are running at.

3 0
3 years ago
Read 2 more answers
H0w to subtract 3/5 - 2/9 =
pochemuha
So here first you have to have same denominators to subtract and add.
to make same denominator you have to multiply something to them which meets up to their lowest common multiple (LCM). so here the easiest thing is multiply each denominator to the other but remember you have to multiply them to the numerator too.
3×9/5×9-2×5/9×5
so it becomes
27/45-10/45
17/45
as you cant bring to its simplest form since the answer in a prime no. leave it like that.
7 0
3 years ago
a guy is washing 32 feet off the ground. he positions the ladder at an angle of 67° with the ground. how tall is the ladder
irina [24]

Answer:

34.76 feet

Step-by-step explanation:

trig

SOH CAH TOA

6 0
3 years ago
Plz help me! It’s math!
serious [3.7K]

Answer:

The first one

Step-by-step explanation:

The number line is supposed to show the product of 2 and five, the arrow will start at 0 because 5 times 0 is 0 then it will go to 5 because 5 times 1 is 5, then another arrow will start at 5 and point at 10 because 5 times 2 is 10

The second option points backwards which would be if you were dividing 10 by 5

The third option starts at negative 10 so it shows -10 divided by -5

the last option starts at 0 and goes to -10 so it shows -5 multiplied by 2

7 0
3 years ago
Read 2 more answers
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