Question

Is surface area (W x L)?
Also is area (W x L x H)?

Answer 1

Perimeter=L+W×2=Meter
Area=L×W=Meter square
Surface Area=L×W×6(if its a cube)=Meter Square
Volume=L×W×H=Meter Cube
8*8=64*3
=192
I apologize if am wrong
Good Luck!

Answer 2

The area of a triangle is 1/2bh (one half, base times height) which is the same as half of 7x8. To find the surface area, do the area four times. The answer is 112