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garik1379 [7]
3 years ago
14

Yet again I still get confused

Mathematics
1 answer:
ryzh [129]3 years ago
6 0
The left side is a half circle.
 The area of a circle is PI x r^2

The diameter of the circle would be the height of the rectangle, given as 10 feet.
 The radius is 1/2 the diameter, so 5 feet.

The area of half the circle is  (3.14 x 5^2) / 2 = 39.25 square feet.

The area of the rectangle is  20 x 10 = 200 square feet.

Total area = 200 + 39.25 = 239.25 square feet.

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For a sequence defined by f(1)=13 and 2f(n-1)+(n-2), which of the following is the value of f(4)
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Given that:
f(1)=13 and 2f(n-1)+(n-2)
then:
f(4) will be found as follows:
f(2)=2f(2-1)=2f(1)=2*13=26
f(3)=2f(3-1)+(3-2)=2f(2)+1=2*26+1=53
f(4)=2f(4-1)+(4-2)=2f(3)+(4-2)=2(53)+2=108

Thus:
Answer:(3) 108

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3 years ago
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4 years ago
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