Pyramide-shaped gift boxes have square bases that measure 5 inches on each side. The slant height is 6.5 inches. How much cardboard is used to make each box?

1. square base area = 25 inches

2. using the slanted 6.5

=1/2base, therefore 5/2=2.5 inches

3. then use pythagoras ... c=6.5, a=2.5

c^2=a^2 + b^2

(do this urself)

4. when u find what b is ... that's the height of one of the triangle

base = 2.5 (look at step 2 if u don't understand this bit)

height=b (refer to step 3)

5. then work out the area of 1 triangle using that ...

6. then have (the answer u work out in step 5) multiply 4

this will give u the area for the all of the 4 triangles ...

7. Then add together the square based area in step 1 ... (25)

to the 4 triangular, area faces (i. e from step 6) - the total will be ur answer for the amount of cardboard!

p. s don't forget the units!