Prism volume = lbh
= 10*8*12
= 960cm^3
Note: I'm assuming the hole was cut right through it...
Hole volume = lbh
= 2*3*12
= 72cm^3
Final volume = 960 - 72 = 888cm^3
Cosine = adjacent / hypotenuse so that is the trig ration we use here:-
cos M = 32/41 = 0.78049
m < M = 38.69 degrees to nearest hundredth
A = 2l + 2w
2w = a - 2l
w = 0.5a - l
3,806,000 is the correct answer.
There are three in the millions place and 806 in the thousands. There are no numbers in the hundreds so you place zeros.