What formula would I use to find the tallest fence pale?
A fence is built behind the oak tree. The fence is made from pales and is sloping upwards. There are 30 pales in the sloping fence. The shortest fence pale is 1.4 metres high. Each fence pale is 40 millimetres taller than the previous pale.
Find the height of the tallest fence pale
A fence is built behind the oak tree. The fence is made from pales and is sloping upwards. There are 30 pales in the sloping fence. The shortest fence pale is 1.4 metres high. Each fence pale is 40 millimetres taller than the previous pale.
Find the height of the tallest fence pale
1 Answer
Explanation:
First, let's make sure we're being consistent with our units. Everything should be in the form of one unit... let's choose meters. Converting
This problem deals with an arithmetic sequence: every pale of the
Our first pale, or first term in our sequence, is
We can think of our sequence as being represented by
where