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allsm [11]
3 years ago
12

What is the total surface area of the rectangular prism represented by this net?

Mathematics
2 answers:
olga nikolaevna [1]3 years ago
8 0

Answer:

150.88

Step-by-step explanation:

Side lengths are 7.4 ,3.1 and 5

How i do it is do all the combinations so 7.4 x 3.1 = 22.94

5 x 3.1 = 15.5 and 7.4 x 5 = 37

then add them all up 22.94 + 15.5 = 38.44 + 37 = 75.44

Now double it since there is two heights, two lengths and two widths

75.44 x 2 = 150.88

If you think there are 4 heights and lengths and widths we already included all numbers twice so just double it

dedylja [7]3 years ago
7 0

Answer:

Total surface area of the rectangular  prism is 150.88 cm^2

Step-by-step explanation:

area of base = area of top

area of base = 5 x 3.1 = 15.5 cm^2

Area of small lateral surface having dimensions 3.1 cm x 7.4 cm is

=3.1 x 7.4 = 22.94 cm^2

Area of big lateral surface having dimensions 5 cm x 7.4 cm is

=5 x 7.4 = 37 cm^2

Total area of prism = 2 x 15.5 + 2 x 22.94 + 2 x 37 = 150.88 cm^2

total surface area of the rectangular  prism is 150.88 cm^2

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