Answer:
Step-by-step explanation:
the perimeter of the semi-circle would be the diameter plus the circumference of half of the circle.
They want to know the perimeter of a square using the diameter of the sem-circle as ONE side, so the perimeter of the square would be 4 times the ONE side.
We should recall:
diameter = 2 times the radius circumference of a cirlce = 2π r
How do we find the diameter of the of the semi circle?
The perimeter of the semi circle is given as 108 cm
Perimeter of the semicirle = 2r + π r diameter plus semi circumference
108 = r ( 2 + π) factor out the r and solve for r
108 / (2 + π) = r divide both sides by ( 2 + r)
Now we know r, the perimeter of the squqre is 4 times 2r or 8r
perimeter of square = 8 [ 108 / (2 + π) ] π I used 3.14
= 864 / 5.14
= 168.1 cm I got rounded to nearest tenth
<em>When I re-checked by work I found a few math, logic and calculation errors. Please re-check my answer for any more mistakes.</em>
Answer: =61.6
Step-by-step explanation:
Answer:
Pounds of apple used = 10,078.20
Pounds of taffy = 144.80
Step-by-step explanation:
Assume :
x = pound of taffy mixture
y = pounds of apple mixture
Total :
x + y = 10,223 - - - (1)
Proportion of apple to taffy
x / y = 1 / 69.6
Cross multiply :
y = 69.6x
(1) becomes :
x + 69.6x = 10223
70.6x = 10223
x = 10223 / 70.6
x = 144.80169
Put x = 144.80169 in
y = 10223 - x
y = 10223 - 144.80169
y = 10078.19831
Pounds of apple used = 10,078.20
Pounds of taffy = 144.80
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18x^2+45x+27 is the answer