Question

Lacey's mom makes her a birthday cake in the shape of an "L" . Lacey loves frosting, so her mom covers the entire outside of the cake in frosting, even the bottom of the cake.

Answer 1

1360 cm

Explanation:

I did it on khan academy 2021. I did the answer above and it was wrong :/

Laceys mom covers 1360 cm in frosting

Answer 2

Explanation:

I think your question is missed of key information, allow me to add in and hope it will fit the original one. Please have a look at the attached photo.

Lacey's mom makes her a birthday cake in the shape of an "L" . Lacey loves frosting, so her mom covers the entire outside of the cake in frosting, even the bottom of the cake.

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

My answer:

As we know that the surface area of the the cake is made up of rectangles. The formula for find the area of a rectangle is A = lw

• The area of rectangle ABCD: 4*2 = 8

• The area of rectangle ADFE : 12*2 = 24

• The area of rectangle TJVS : 4*2 = 8

• The area of rectangle ESFV :9*2 = 18

• The area of rectangle HTJG: 5*2 = 10

• The area of rectangle CBHG: 2*8 = 16

The area of CDEVGJ = ABHTFS

= 4*12 + 4*5

= 68

So the total area is: 68 +68 +16+10+18+8+24+8 = 220

Hope it will find you well