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Alex73 [517]
2 years ago
12

Find the total area for the regular pyramid T.A. =

Mathematics
1 answer:
Stolb23 [73]2 years ago
4 0

Answer:

The answer to your question is At = 48 + 36\sqrt{3}

Step-by-step explanation:

Area = Area of the base + Lateral area

a) Area of the base

    Area = length x height / 2

    length = 12

    height² = 12² - 6²

                 = 144 - 36

                 = 108

    height = \sqrt{108} = 6\sqrt{3}

    Area = 12 x 6\sqrt{3} / 2

              = 36\sqrt{3}

b) Lateral area

   height² = 10² - 6²

                = 100 - 36

                = 64

   height = 8

   Area = 12 x 8/2

            = 48

c) Total area

   At = 48 + 36\sqrt{3}

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$800 at 7% compounded annually for 2 years
Marina86 [1]

Answer:

$115.92

Step-by-step explanation:

To calculate compound interest, which Amount - Principal but we dont know the value for amount so we find the amount first by using the formula.

               A =  P ( 1 +   <u>R</u> ) ^n

                                 100      

where p = principal    ($800)            

a =  amount       (?)

r =  interest rate    (7%)

n = time ( no of years)    (2)

A  =  800   ( 1   +   <u>7 </u>) ^2

                          100                  A = 800 ( 1 + 0.07) ^2

                                                  A = 800 ( 1.07)^2   = 800 ( 1.1449)

A = 915.92.

We then find compound interest with:    

C = Amount - Principal   =   $915.92  -  $800    =    $115.92

7 0
2 years ago
Monarch butterflies flap their wings about 12 times a second in
Inessa [10]
Remember: 60 seconds in a minute, 60 minutes in one hour.
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12x60=720x60=43,200
8 0
3 years ago
Find the unknown angle measure.
spin [16.1K]

Answer:

x=80

Step-by-step explanation:

The sum of interior angles in a quadrilateral is 360°

the square represents a right angle= 90 degrees

124+66+90=280

360-280=80

x=80

6 0
3 years ago
How do you divide 75 into 1000
Maksim231197 [3]
The answer is going to be a fraction...which is 75/1000, otherwise known as 1/40
3 0
3 years ago
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xxTIMURxx [149]
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