The nth term of an AP is given by 2n +9 find the first term

Mathematics

1 answer:

den301095 [7]3 years ago

6 0

The first term of an AP can be defined as T1 i.e. n=1. According to the given equation,. T1=a=2(1)+9=11.

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OK so I don't want answers, I just want someone to walk me through this and teach me how to do it.

Serggg [28]

Answer:

352cm²

Step-by-step explanation:

The shape is a cuboid and it has 6 faces, and the opposite faces are equal, so I calculate 3 different faces and multiplied it by 2 to give me the total surface area. Therefore, total surface area = the addition of all the surface areas in the shape. And to get each surface area, you have find the area of each of the 6 faces, and add them together, to give you the total surface area.