Squares
√169
13
What is the circumference of a circle with a radius of 5 cm?
31.4 cm
3√64
4
Is it Rational or Irrational? Explain. √121
11. rational. because it is a perfect square
x2= 81
What is x?
x = 9
√225
15
What is the circumference of a circle with a diameter of 15 m?
47.1 m
3√27
3
Is it Rational or Irrational? Explain. 13/99
Rational. Because it is a fraction/ repeating decimal.
x3= 512
x = 8
√361
19
What is the area of a circle with a radius of 3.5?
38.5
3√512
8
Is it Rational or Irrational? Explain. 9π
Irrational. Because it has pi and pi is irrational
What is surface area of a dice where all sides have an area of 6 in squared? Hint: think how many sides are on a cube.
36 inches squared
√625
25
What is the area of a circle with a radius of 5.1?
81.7
3√729
9
Is it Rational or Irrational? Explain. √70
Irrational. Not a perfect square
x3= 27,000
x = 30
√529
23
What is the area of a circle with a diameter of 17?
226.9
3√216
6
Is it Rational or Irrational? Explain. 0.7272727272...
Rational. It is a repeating decimal. It can be written as a fraction.
Find the surface area of a triangular pyramid where the base triangle has an area of 40 ft squared and the other sides have an area of 32 ft squared?
136 ft squared