Answer:
2+2=4
Step-by-step explanation:
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Answer:
The answer is "148 ft".
Step-by-step explanation:
Using formula:
Calculating rectangle area:
![A=lw](https://tex.z-dn.net/?f=A%3Dlw)
![=15 \times 8\\\\=120](https://tex.z-dn.net/?f=%3D15%20%5Ctimes%208%5C%5C%5C%5C%3D120)
Calculating semicircle area:
![A=\frac{1}{2} \pi r^2\\\\](https://tex.z-dn.net/?f=A%3D%5Cfrac%7B1%7D%7B2%7D%20%5Cpi%20r%5E2%5C%5C%5C%5C)
![=\frac{1}{2} \times \pi \times 7.5^2\\\\=\frac{1}{2} \times \pi \times 56.25\\\\=28.125\ \pi \\\\=28 \ \pi](https://tex.z-dn.net/?f=%3D%5Cfrac%7B1%7D%7B2%7D%20%5Ctimes%20%5Cpi%20%5Ctimes%207.5%5E2%5C%5C%5C%5C%3D%5Cfrac%7B1%7D%7B2%7D%20%5Ctimes%20%5Cpi%20%5Ctimes%2056.25%5C%5C%5C%5C%3D28.125%5C%20%5Cpi%20%5C%5C%5C%5C%3D28%20%5C%20%5Cpi)
Total area:
![=120+28\\\\=148](https://tex.z-dn.net/?f=%3D120%2B28%5C%5C%5C%5C%3D148)
There are 120 different combinations.
There are 5 to use for the first bead; then after it is used, 4 for the second; 3 for the third; 2 for the fourth; and 1 for the fifth and last bead:
5*4*3*2*1 = 120.