Posted by **Krystal.T** on Saturday, June 23, 2012 at 12:16pm.

A rectangular block is 2 cm wider than it is high and twice as long as it it wide. Let x cm be the height of the block.

Find an expression for the total surface area, A cm2, in term of x.

- math -
**MathMate**, Saturday, June 23, 2012 at 5:42pm
Let L,W and H be the dimensions of the rectangular block.

Total surface area

A=2(LW+WH+HL)

So if

H=height=x

then

W=x+2, and

L=2W=2(x+2)

Substitute these values of H,W and L into the equation for A and simplify.

- math -
**tylee**, Wednesday, August 27, 2014 at 12:15am
on a piece of paper draw a rectangle paddock 20 cm long and 10 cm wide

?

- math -
**tylee**, Wednesday, August 27, 2014 at 12:16am
on a piece of paper draw a rectangle paddock 20 cm long and 10 cm wide ?

## Answer this Question

## Related Questions

- math - At the ruins of Caesarea, archaeologists discovered a huge hydraulic ...
- Math - a rectangular block 16 cm long has two spare faces. A cube of volume 343 ...
- Algebra 2 - At the ruins of Caesarea, archaeologists discovered a huge hydraulic...
- Calculus - A block of ice is exposed to heat in such a way that the block ...
- Physics - A rectangular block of wood is 40cm wide, 60cm long and 30cm deep. If ...
- Math: Geometry - Joe is making a toy from a rectangular block of wood. He ...
- Math - Wooden blocks are stacked to form a cube 3 block wide, 3 block long, and ...
- Advanced chem - A rectangular block of wood is 40cm wide, 60cm long and 30cm ...
- Science - If a block is 12cm wide, 7cm long and 9 cm then how much of the block ...
- precalc - Hi. Can someone please help me with this problem? A rectangular block ...

More Related Questions