Answer:
His error occurred in the last step
Explanation:
He was supposed to calculate -

which would equal -

Because he added instead of subtracted.
Hope this helps!
<em>stay safe</em>
Answer:
20
Step-by-step explanation:

<span>Sum of Interior Angles = (Number of Sides -2) • 180 degrees
It seems C is the answer.
</span>
Answer:
603.19
Step-by-step explanation:
v=π
pi is 3.14
Radius= Diameter/2= 4, so r square= 16
Height= Radius*3=12
So volume= 3.14*16*12=603.19
Answer:
Explanation is^{} in a file
bit.^{} ly/3fcEdSx