Posted by **Angel** on Wednesday, November 6, 2013 at 5:34pm.

Find, to the nearest tenth of a centimeter, the length of a diagonal of a square if the measure of one side is 8.0 centimeters.

- Geometry -
**Ms. Sue**, Wednesday, November 6, 2013 at 5:46pm
Pythagorean Theorem

a^2 + b^2 = c^2

8^2 + 8^2 = c^2

64 + 64 = c^2

11.3 = c

- Geometry -
**Angel**, Wednesday, November 6, 2013 at 6:39pm
The diagonal of a square measures 12 feet.

a. What is the exact measure of a side of the square?

b. What is the area of the square

- Geometry -
**Ms. Sue**, Wednesday, November 6, 2013 at 6:45pm
Use the Pythagorean Theorem.

What do you get for the measurement of a side of the square?

- Geometry -
**Angel**, Wednesday, November 6, 2013 at 6:54pm
I manage to get X^2+X^2=144

- Geometry -
**Ms. Sue**, Wednesday, November 6, 2013 at 7:08pm
Right so far.

2x^2 = 144

x^2 = 72

x = 8.4852813

Each side = 8.4852813 feet

A = s^2

A = 72 square feet

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