A salt shaker is shaped like a square pyramid. The perimeter of the base is 16cm, the height of the salt shaker is 20cm, and the slant height is about 10.2cm. Select values to label the net below with the correct dimensions.

What is the surface are of the salt shaker?

97.6 square cm

Step-by-step explanation:

We are given that

Perimeter of base=16 cm

Height of salt shaker,h=20 cm

Slant height of salt shaker,l=10.2 cm

Perimeter of base,P=4(length of side of base)

Surface area of square pyramid=

Using the formula

Surface area of square pyramid=

Surface area of square pyramid=

Surface area of square pyramid=97.6 square cm

which expression represents the approximate length of bc?

step-by-step explanation:

-3

step-by-step explanation:

a drawing really does here:

so i draw the horizontal line y=2 and the vertical line x=-2 at this intersection i put b (this is where my right angle is going to be).   so point b is at (-2,2).   point a is 5 units long and is also on y=2 so this point has to be (3,2) or (-7,2) -doesn't matter i will go with (3,2).

now we know c is at (-2,y) we don't know the y yet bet we know that c is on x=-2.

we have the area of the triangle is .5bh=12.5

we know the base length is 5 (ab)

we have the height is (2-y) if you look at your

plug in

.5(5)(2-y)=12.5

solve for y to get the y-coordinate for c

2.5(2-y)=12.5

divide both sides by 2.5 giving:

2-y=5

now subtract 2 on both sides

-y=3

y=-3