A triangle has 180 degrees. You can find the total sum of the ratio by adding its parts together 1+3+5 = 9 Now to find out what each part of the ratio is worth we divide the whole value (180) by the sum of the ratio parts (9)
180/9 = 20
Now we multiply each part of the ratio by 20
1 * 20 = 20
3 * 20 = 60
5 * 20 = 100
Since we have an angle greater than 90 degrees this is an obtuse triangle.
All of your choices are the same, but if I were to solve it, it be 4.331507 x 10 to the power of 6 because the decimal should be in between the last digit (7) and an imaginary 0 you could say. Sort of like this 4331507.0 also remember to not add commas, they confuse many people into thinking they're decimal points
I know how to figure out the answer though I am at school right now, I will be home in about 20 minutes. I will answer first thing when I get back.
