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 inches 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

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

It needs to tell how much one poster board and how much one paintbrush is