The length of the diagonal is the hypotenuse of the fence
The length of the wood is yards
The dimensions of the fence are:
7 ft by 7 ft
The length (L) of the diagonal is calculated using:
This gives
Express as products
Express as radical
Hence, the length of the wood is yards
Read more about diagonals at:
Answer: The answer is (d) It is an irrational number.
Step-by-step explanation: Given formula for circumference of a circle is
where 'd' is the length of the diameter and a rational number.
We are to choose one of the given four options for the circumference 'c' of the circle.
We know that the circumference of a circle with diameter 'd' is given by
Comparing this with the given equation, we get
Now, the product of a rational and an irrational number is again irrational, so 'r × d' will be an irrational number.
Hence, the circumference, c = rd is irrational.
Thus, the correct option is (d) It is an irrational number.