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Fynjy0 [20]
3 years ago
12

Find the total surface area of the following prism

Mathematics
1 answer:
Kisachek [45]3 years ago
8 0

Answer:

Surface area of the prism = 340 cm²

Step-by-step explanation:

Surface area of the prism given in the figure,

Surface area = Two pentagonal bases of the prism + Area of the five lateral rectangular sides

Area of the pentagonal base = \frac{1}{2}\times a \times P

Here 'a' = apothem of the pentagon

P = Perimeter of the pentagon

P = 5×5 = 25 cm

a = 3.6 cm

Area of the pentagon = \frac{1}{2}(25)(3.6)

                                    = 45 cm²

Area of a rectangular lateral side = Length × width

                                                       = 10 × 5

                                                       = 50 cm²

Area of the prism = 2(Area of pentagonal base) + 5(Area of one rectangular side)

                             = 2(45) + 5(50)

                             = 90 + 250

                             = 340 cm²

Therefore, surface area of the given prism = 340 cm²

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