Respuesta :

wegnerkolmp2741o

Answer:

x=5

Step-by-step explanation:

Volume of a prism

V - l*w*h

90 = 6*3*x

90 = 18x

Divide by 18

90/18 = 18x/18

5=x

smartdoggo
It’s 5 since 3 times 6 is 18 and then we know that something times that has to be 90. To get that we divide 90 by 18 and again it’s 5

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