Marley bakes a rectangular cake that is 20 inches wide, 12 inches long and 6 inches high. She removes the cake from the pan to f
rost it. How many square inches of frosting does she need?
1 answer:
We know that
surface area of rectangular cake=area of the base+perimeter of base*height
<span>only the top area is considered for frosting</span>
area of the base=20*12----> 240 in²
perimeter of the base=2*[20+12]----> 64 in
height=6 in
surface area of rectangular cake=240+64*6----> 624 in²
the answer is
624 in²
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The element you add is 
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Best of Luck!
Not positively sure but I believe it goes like this
Answer: 9x+26+5x=180
14x+26=180
180-26=14x
14x=154
X=15
