You just need to multiply it all together. The steps are already done for you :)
3x2x4 = 24cm^2
Hope that helped you out.
eliminating y
x - y = -5
3x + y = 1
________ +
4x = -4
x = -1
eliminating x
• x - y = -5 ....... (x3)
3x + y = 1 ....... (x1)
• 3x - 3y = -15
3x + y =1
___________ -
-4y = -16
y = 4
A. (-1, 4)
E has 3 of them.
F has 2 of them.
H has 2 of them.
M has 2 of them on the sides.
N has 2 of them on the sides.
U has 2 of them on the sides.
W has 2 PAIRS of them ... the \ \ and the / /
Z has 2 of them on the top and bottom.
Because 0 + 27 is 27 and 10 + 17 is 27 as well
(approximately)