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3 years ago

Find the first, fourth, and tenth terms of the arithmetic sequence described by the given rule.

1 answer:

5 0

1st term
A (1) = -6+(1-1)(6)
= -6 +0
= -6

4th term
A (4)= -6 +(4-1)(6)
=-6 + 18
= 12

10th term
A (10) =-6 +(10-1)(6)
=-6 + 54
=48.

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<h2>Answer:</h2>

The area of the top surface of the washer is: 160.14 square mm.

<h2>Step-by-step explanation:</h2>

The top of the surface is in the shape of a annulus with a outer radius of 10 mm and a inner radius of 7 mm ( since the diameter of the hole is: 14 mm and we know that the radius is half of the diameter)

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Here we have:

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