For 3. he answer is a
for 4 the answer is two
<em>Refer to the attachments!!</em><em>~</em>
You are using the distributive property so you will multiply all the numbers in the parentheses by 5. So the end expression would be 30m+20n-15p
4*(10*12/2)+4*(12*9)+(12*12)= 816 ft^2
the surface area is 816 ft^2.
