Answer:
is it adding or subtraction
Answer:
Step-by-step explanation:
Perimeter of quarter circle = r + r + ![\frac{1}{4}*2*\pi *r](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B4%7D%2A2%2A%5Cpi%20%2Ar)
![= 10 + 10 + \frac{1}{4}*2*3.14*10\\\\= 10 + 10 + 3.14*5\\\\\\= 10 + 10 + 15.70\\\\= 35.70 cm](https://tex.z-dn.net/?f=%3D%2010%20%2B%2010%20%2B%20%5Cfrac%7B1%7D%7B4%7D%2A2%2A3.14%2A10%5C%5C%5C%5C%3D%2010%20%2B%2010%20%2B%20%203.14%2A5%5C%5C%5C%5C%5C%5C%3D%2010%20%2B%2010%20%2B%2015.70%5C%5C%5C%5C%3D%2035.70%20cm)
2) d = 2*10 = 20 cm
Perimeter of semicircle = diameter + (1/2) * circumference of circle
![= 20 + \frac{1}{2}* 2*\pi *r\\\\= 20 + \frac{1}{2}*2*3.14*10\\\\= 20 + 3.14*10\\\\= 20 + 31.4\\\\= 51.40 cm](https://tex.z-dn.net/?f=%3D%2020%20%2B%20%20%5Cfrac%7B1%7D%7B2%7D%2A%202%2A%5Cpi%20%2Ar%5C%5C%5C%5C%3D%2020%20%2B%20%5Cfrac%7B1%7D%7B2%7D%2A2%2A3.14%2A10%5C%5C%5C%5C%3D%2020%20%2B%203.14%2A10%5C%5C%5C%5C%3D%2020%20%2B%2031.4%5C%5C%5C%5C%3D%2051.40%20cm)
3) Perimeter of three-quarter = r + r + (3/4)* circumference of circle
![= 10 + 10 + \frac{3}{4}*2*\pi *r\\\\= 10 + 10 + \frac{3}{4} * 2 * 3.14 * 10\\\\= 10 + 10 + 3 * 3.14 * 5\\\\= 10 + 10 + 47.1\\\\= 67.1 cm](https://tex.z-dn.net/?f=%3D%2010%20%2B%2010%20%2B%20%5Cfrac%7B3%7D%7B4%7D%2A2%2A%5Cpi%20%2Ar%5C%5C%5C%5C%3D%2010%20%2B%2010%20%2B%20%5Cfrac%7B3%7D%7B4%7D%20%2A%202%20%2A%203.14%20%2A%2010%5C%5C%5C%5C%3D%2010%20%2B%2010%20%2B%203%20%2A%203.14%20%2A%205%5C%5C%5C%5C%3D%2010%20%2B%2010%20%2B%2047.1%5C%5C%5C%5C%3D%2067.1%20cm)
Answer:
x>-7
Step-by-step explanation:
Hi there!
So to get this we just need to multiply 300 by 5 because it is 1/5 of the hour work. 300 x 5 = 1500 light bulbs. Hope this helps!
Answer:
C:25
Step-by-step explanation:
Hopefully this helps!