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makkiz [27]
3 years ago
13

Find the area of this composite figure use 3.14 for pi

Mathematics
1 answer:
german3 years ago
3 0

Answer:

3.14×4÷5

Step-by-step explanation:

multiply 3.14 by 4 then divide that answer by 5

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15. The height and yolume of a cylinder are 4cm and 616cm respectively. Calculate the diameter of the base. (take t = 27 쪽 A. 7c
irakobra [83]

Step-by-step explanation:

Given that,

  • Height of cylinder = 4 cm
  • Volume of cylinder = 616 cm³

To find,

  • Diameter of the base = ?

Firstly we'll find the base radius of the cylinder.

\longmapsto\rm{V_{(Cylinder)} = \pi r^2h}\\

<u>Accordi</u><u>ng</u><u> </u><u>to</u><u> </u><u>the</u><u> </u><u>qu</u><u>estion</u><u>,</u>

\longmapsto\rm{616= \dfrac{22}{7} \times r^2 \times 4}\\

\longmapsto\rm{616 \times 7 = 22 \times r^2 \times 4}\\

\longmapsto\rm{4312 = 88 \times r^2 }\\

\longmapsto\rm{\cancel{\dfrac{4312}{88}} =  r^2 }\\

\longmapsto\rm{49 =  r^2 }\\

\longmapsto\rm{\sqrt{49} =  r }\\

\longmapsto\rm{7 \; cm =  r }\\

Now,

\longmapsto\rm{Diameter = 2r }\\

\longmapsto\rm{Diameter = 2(7 \; cm) }\\

\longmapsto\bf{Diameter = 14 \; cm}\\

The required answer is 14 cm.

4 0
3 years ago
The Clear Talk cellular company claims that the average monthly cellular bill of each of their customers is $78.85 with a standa
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djyliett [7]

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Step-by-step explanation:

If two exponents are being multiplied together, and they have the same base and different exponents then just add the exponents and let the base stay the same.

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5. Find JK to the nearest whole number.<br> A
pentagon [3]

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15 quarts equals how many cups?
olga2289 [7]

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Leave a like or comment

stay safe :)

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