A gold bar has a trapezium cross-sectional area. Gold has a density of 19.3 grams per cm^3 work out the mass of the gold bar in kg

Step-by-step explanation:

step 1

Find the volume of the trapezoidal prism

The volume of the prism is equal to

where

B is the area of the trapezoidal face

L is the length of the prism

Find the area of the base B

we know that

The area of a trapezoid is equal to

we have

substitute

step 2

Find the mass

Remember that

The density is equal to divide the mass by the volume

so

we have

substitute

solve for the mass

Convert to Kg

Remember that

therefore

c.

step-by-step explanation:

the answer is 3/2 and for decimal: 1.5

hope i

-lavira: )