The sum of the first n natural numbers and 0=
n*(n+1)/2
The top one is the answer
Answer:
I think they're vertical angles
x~Shaun
The formula to use is A=(b1+b2)h if one base is 24 and the other one is 16 which equals to 40 when you add then you still have H which is 12 so you could either divide 12 by two to get half or multiply by 12 and then divide it
40•12=480
480 divided by 2= 240
Your final answer should be 240ft
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