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Tju [1.3M]
3 years ago
7

Calcular el área y el perímetro de un círculo que tiene 50 cm de radio

Mathematics
1 answer:
gulaghasi [49]3 years ago
8 0

Answer:

Area: 7850 square cm

Perimeter: 314 cm.

Step-by-step explanation:

The area is \pi r^{2}. With r=50, \pi 50^{2}=2500π which is about (2500)(3.14)=7850.

The perimeter is 2\pi r which is the same as (diameter)(π). The diameter is 100, so 100\pi which is about (100)(3.14)=314.

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Pleaseeeeeeee help 32 points
zlopas [31]

Find out the length of each side. For the slanty sides, you can do this by using the formula

d = \sqrt{(y2-y1)^{2} +(x2-x1)^{2} }

For the straight sides (like the one on the bottom and the one on the left), just use simple subtraction.

Add up all 4 sides and you get the perimeter. You should get 20, 15, 5\sqrt{5} and 5\sqrt{26}.  The total is 35 +  5(\sqrt{26} +\sqrt{5} ).

8 0
3 years ago
How can You use mental math for 878 + 534=
antoniya [11.8K]
Think of it like your drawing it in your head
in my head i would say 8+4=12 carry the 1 so 7+3+1= 11 carry the 1 then 8+5+ 1= 14 so the answer would be 1,412
6 0
3 years ago
Read 2 more answers
Both families use 1250 kWh for the given 30 day period. The Freeman family uses 400 kWh during on-peak hours and 850 during off-
rusak2 [61]
<span>D. The Baum family pays $78.25 more than the Freeman family.</span> 
8 0
3 years ago
Martin deposits $200 in a savings account that earns 5% annual interest. four years later, cary deposits $200 in an account earn
Scrat [10]
<span>Martin deposits $200 in a savings account that earns 5% annual interest.

year         interest                       balance

1              200 * 5%                    200(1.05)

2              200(1.05) * 5%          200(1.05)^2

3              200(1.05)^2*5%        200(1.05)^3

y                                                200(1.05)^y

=> m = 200 (1.05)^y

four years later, cary deposits $200 in an account earning the same interest.

</span>
<span><span>year         interest                       balance

5              200 * 5%                    200(1.05)

6              200(1.05) * 5%          200(1.05)^2

7             200(1.05)^2*5%        200(1.05)^3

y                                                200(1.05)^(y-4)

=> c = 200(1.05)^ (y-4)
</span>
Answer:
Martin: 200(1.05)^y
Cary: 200(1.05)^(y–4)
</span>
3 0
3 years ago
Read 2 more answers
in the figures below the cube shaped box is 6 inches wide and the rectangular box is 10 inches long 4 inches wide and 4 inches h
IRINA_888 [86]
<span>The cube’s sides measures 6 inches and the measurement for the rectangular box is that it is 10 inches long, 4 inches thick and 4 inches high. To compute for the volume of a cube you must use the formula of V = a3 and for the rectangular prism is V = l x w x h.</span>
<span>Cube:    V = 6^3
</span>              <span>V = 216 inches^3</span>
<span>Rectangular Prism:       V = 10 x 4 x 4</span> <span>             
                                       V = 160 inches^3</span>
To identify how much greater the volume the cube from the rectangular box we subtract their volumes.
N = C – R where N stands for the unknown C for the volume of cube and R for the volume of Rectangular Box <span>
N = 216 inches^3 – 160 inches^3
</span> <span>N = 56 inches^3</span> <span>
So the cube is 56 inches3 greater than the rectangular box.</span>


4 0
3 years ago
Read 2 more answers
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