Question

Please Please help me with my math Thanks :)

Answer 1

About 3.1 feet

Explanation:

To find the missing lengths of a triangle, we must use pythagorean theorem. I'll put each part in steps so you can easily follow.

Step 1: Set Up the Equation

`a^(2) + b^(2) = c^(2)`

Note: c is the longest side of the triangle, the hypotenuse and a and b are the other two sides.

Step 2: Fill in Given Values

`1.4^(2) + b^(2) = 2.1^(2)`

Step 3: Multiply

`1.96 + b^(2) = 4.41`

Step 4: Subtract

`1.96 + b^(2) = 4.41\\b^(2) = 2.45`

Step 5: Unsquare b

`b = √(2.45) \\b = 1.56524758424...`

b = about 1.6

Step 6: Find the Chord

`x = 2y = 2 * 1.57 = 3.14`

about 3.1 feet

Step 7: Check

1.96 + 2.45 = 4.41

4.41 = 4.41 ✔

Step 8: Answer

x = about 3.1 feet

I'm always happy to help :)

Answer 2

Explanation:

Pythagorean theorem ,

y² = 2.1² - 1.4²

= 4.41 - 1.96

= 2.45

y =√2.45

y = 1.57 ft

x = 2y = 2 * 1.57 = 3.14

= 3.1 feet