Answer:
see pdf
Step-by-step explanation:
The total cost of 1 folder, 1 notebook, and 1 set of pencils is $14.00 because 8 + 2 + 4 = 14.
Split the shape into two shapes
A square
Area = L x H = 20 x 21 = 240 cm2
A right angle triangle
Area of right angle triangle = L x H divided by 2
20 x 21 = 240 divided by 2 = 120 cm2
Add both areas
240 + 120 = 360 cm2