Answer:
1.not 2×4 is 2+4 answer should be 6x⁶
2.not 3+4 is 3×4 answer should be 12a⁷
3.miss 1 should x^(6+1+3) should be x¹⁰
4.base different, and just become 81×8=648
182 m^ (Third answer) because it is not the volume
2 rectangles measuring 17x2 2(17x2)= 2x34 = 68 m^
2rectangles measuring 17x3 2(17x3)=2x51+102 m^
2rectangles measuring 3x2 2(3x2)=2x6=12 m^
TOTAL---------------------------------------------------------182 m^
A=4
The work behind it
-11a+33= -11
-33 -33
-11a=-44
Divide both sides by -11
-44/-11=a
A=4
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