You need to wrap a present that is in the shape of a rectangular prism the present has a length of 5 inches a width of 4.5 inche
s and a height and a height of 3.5 inches find the total surface area of the present
A. 111.5 in2
B. 55.75 in2
C. 95.75 in2
D. 135 in2
1 answer:
The equation for surface area is 2(lw+lh+wh) or length times width plus length times height plus width times height times 2.
so in this problem legth=5 and width=4.5 so 5×4.5=22.5
length=5 height=3.5 so 5×3.5=17.5
width=4.5 height=3.5 so 4.5×3.5=15.75
add these together and you get 55.75.
now we multiply that by 2 so 55.75×2=111.5
so the surface area of the gift is (drumroll please) 111.5
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