Helllp me plzzz?

Question

A reinforcing beam is solid oak. Each cm of oak has a mass of 0.7 g. What will be

the mass of the rectangular prism if it is 3 m long by 30 cm thick and 30 cm wide?

Answer 1

3m =300cm

300x30x30x0.7

=189000g

Answer 2

u need to know how much a cubic cm weighs...

if thats 0.7, Lenght (in cm) times Width (cm) times height (cm) gives you how many cubic cm in your prism. multiply how many by the weight and you got it man.

(300 times 30 times 30 =x)

(x times 0.7 = answer)