How much space does Lacey's mom cover in frosting?

236 in squared

Step-by-step explanation:

You can separate the shape into two rectangular prisms.

prism 1 - 9, 2,4

prism 2 - 4, 2, 8

Since the frosting is on the outside of the cake you have to find the surface area.

To find the surface area you use the equation:

2 (wl + hl + hw)

Put in the values you know:

2 (9 * 2 + 4 * 2 + 9 * 4)

multiply:

2 (18 + 8 + 36)

Add:

2 (62) = 124

Now you find the surface area of the second prism.

2 (4 * 2 + 2 * 8 + 4 * 8)

Multiply:

2 (8 + 16 + 32)

Add:

2 (56) = 112

Now add the two surface areas to get the surface area of the whole shape.

112 + 124 = 236

The answer is 236 in squared