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UNO [17]
3 years ago
15

Find the area of ​​a circle with diameter 16cm. Use the value 3.14 for, and do not round your answer. Be sure to include the cor

rect unit in your answer.
Mathematics
2 answers:
Alla [95]3 years ago
7 0
Area of a circle = Pi * r^2

3.14 * 8^2
3.14 * 64 = 200.96cm
astra-53 [7]3 years ago
4 0

Answer:

200.96cm²

Step-by-step explanation:

Formula:

A = pi*r^2

A = 3.14(64)

A = 200.96cm²

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navik [9.2K]

I believe the area of the blank rectangle, the biggest one, is 2800. The whole rectangle all together is 3225.

Explanation:

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3 years ago
Find the solution to the following system using substitution or elimination: y = 3x + 2 y = -2x - 8 O A. (-5,-) OB. (-2,-4) O C.
mr Goodwill [35]

Answer:

B. (-2,-4)

Explanation

Given equations:

   y = 3x + 2

   y = -2x - 8

Solving both equations will yield the values of x and y;

Solution:

   y = 3x + 2    ----- (i)

   y = -2x - 8   ------ (ii)

Using substitution method, input equation i, into ii

    3x + 2 = -2x - 8

Collect like terms and solve;

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Then put x = -2 into i, to find y

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So, the solution of the equation is B. (-2,-4)

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2 years ago
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vovikov84 [41]

Answer:

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Step-by-step explanation:

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4 0
3 years ago
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