1. 10x8 =80cm
2. 2.5 x 4.33=10.825ft triangles is base x height so it is half of 5 which is 2.5 to get the base number
3. 11x13= 143 ft
4. 8.5x12=102m
7. 12x 6 =72cm
8. (10x3)1/2=
30x1/2= 15in
Solution:
<u>A few definitions...</u>
- Rational number - Any integer, fraction, terminating decimal, or repeating decimal is classified as a rational number
- Irrational number - All the real numbers which are not rational numbers.
<u>Option A - Rational or Irrational?</u>
Since both are known as fractions, they are rational numbers.
<u>Option B - Rational or Irrational?</u>
√2 is classified as an Irrational number because if it is simplified, it does not result in any integer, fraction, terminating decimal, or repeating decimal.
<u>Option C - Rational or Irrational?</u>
- 1/√4 + 7/2
- => 1/2 + 7/2
- => 8/2 = 4
Since this is an integer, this is rational.
<u>Option D - Rational or Irrational?</u>
- √9 + √4
- => √3 x 3 + √2 x 2
- => 3 + 2 = 5
Since this is an integer, this is rational.
In conclusion...
Option B is correct.
(2(3x4))+(2(4x8))+(2(3x8)) = 24+64+48 = 136
Answer: C
