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1) 150 meters (a squared + b squared = c squared so you would do 90 times 90 + 120 + 120 and then square root that to get 150)
2) 18.02 (a squared + b squared = c squared)
3) 150 (you have to find out the length which is 20 then you do 15*20 and divide that by 2 to get 150)
4) 14.21 (a squared + b squared = c squared)
5) A (8 squared + 15 squared DOES EQUAL 17 squared)

Answer: v= lwhstep by step explanation: length x width x heightl = 12kmw = 6kmh = 6km12 x 6 = 7272 x 6 = 432therefore your answer would be c) 432 km^3