Question 1038201

Manny wants to sew a ribbon border around a small triangular cushion with sides of square root 45cm, 6 square root 5cm and square root 125cm.
A) determine the exact length of ribbon Manny needs.
B) determine the!approximate length Manny needs to one decimal point 
<pre>Exact length: {{{highlight_green(matrix(1,2, 14sqrt(5), cm))}}}
Approximate length: {{{highlight_green(matrix(1,4, 31.30495168, or, 31.3, cm))}}}