Please help fast mathswatch!!
1 answer:
Answer:
800 cm^3
Step-by-step explanation:
An easy way is to cut the base up into two parts. Take a look at the drawing I added below for explanations!
Rectangle ACDG has an area of 28.
--> (12-5)(4) = (7)(4) = 28
Rectangle BFEG has an area of 72.
--> (10-4)(12) = (6)(12) = 72
So the total area of the base is 28 + 72 which is 100.
Base x Height is the volume, so it will be 100 x 8 (The height) = 800
So 800 cm^3 is your answer!
You might be interested in
<u>ANSWER </u>
<u>EXPLANATION</u>
We the have the equations,
Multiplying through by negative one gives,
Also
and
Dividing through by 2 gives
Making z the subject gives,
Now we substitute equation (3) into equation (1) and (2)
Equation (3) in to equation (1) gives,
This implies that;
We now put equation (3) in (2) to get,
This implies that
But
So,
Dividing through by negative 9 gives
and
Therefore