Look the answer up on the delta math website it’ll pop up
It's the distributive property. It takes the equation, 15+10 and finds the greatest common factor of 5. it divides both numbers by 5 and puts the 5 outside of the parentheses.
Answer:
50.2 square cm
Step-by-step explanation:
Diameter = 8 cm
Radius = 8/2 = 4 cm
![area \: of \: circle = \pi {r}^{2} \\ = 3.14 \times {4}^{2} \\ = 3.14 \times 16 \\ = 50.24 \: {cm}^{2} \\ = 50.2 \: {cm}^{2}](https://tex.z-dn.net/?f=area%20%5C%3A%20of%20%5C%3A%20circle%20%3D%20%5Cpi%20%7Br%7D%5E%7B2%7D%20%20%5C%5C%20%20%3D%203.14%20%5Ctimes%20%20%7B4%7D%5E%7B2%7D%20%20%5C%5C%20%20%3D%203.14%20%5Ctimes%2016%20%5C%5C%20%20%3D%2050.24%20%5C%3A%20%20%7Bcm%7D%5E%7B2%7D%20%20%5C%5C%20%20%3D%2050.2%20%5C%3A%20%20%7Bcm%7D%5E%7B2%7D%20)