## Thursday, October 28, 2010

### Glenesse's Scribe 2

Show You Know pg. 83, pg. 85 Question 2, 6, 11, 15.

Show You Know pg. 83
Question:
Determine the area of a square with a side length of 16mm.

We all know that a square has 4 equal sides so you multiply the side length of 16mm by itself.
16x16=256 mm squared
The area of the square that has a side length of 16mm is 256 mm squared.

Page 85
Question:
2)How would you use prime factorization to determine the square root of 225? Compare your answer with a classmate's.

So 225 is a perfect square.
After you compare it to your classmate's

Question:
6)A rectangle has an area of 64 m squared
a)Determine the prime factorization of 64.
b)Is 64 a perfect square? Explain.
c)Draw a square with that area and label its side length.

a)

b) 64 is a perfect square because the prime factor is 2 and it can be divided into equal parts.
c)

Question:
11)What is the area of a square with each side length?
a) 10
b) 16

a) 9 x 9 = 81 unit squared
b) 16 x 16 = 121 unit squared

Question:
15) Evaluate
a) 49 squared
b) 64 squared
c) 625 squared

I used a calculator for this question.
a) 49 squared = 7
b) 64 squared = 8
c) 625 squared = 25