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NemiM [27]
3 years ago
7

What is the lateral and surface area? ​

Mathematics
1 answer:
pshichka [43]3 years ago
4 0

Answer:

L = 324 cm²

S = 359.1 cm²

Step-by-step explanation:

Lateral surface area of a triangular prism is given by,

Lateral surface area = Perimeter of the triangular base × Height

                                  = (9 + 9 + 9)×12

                                  = 27 × 12

                                  = 324 cm²

Surface area area of the triangular prism = Lateral area of the prism + Area of the triangular bases

= 324 + \frac{1}{2}(Base)(Height)

= 324 + \frac{1}{2}(9)(7.8)

= 324 + 35.1

= 359.1 cm²  

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