Answer:
80.48m2
Step-by-step explanation:
I think this is right but it may be wrong.
Differentiating both sides of

with respect to <em>x</em> yields (using the chain rule)

Solve for d<em>y</em>/d<em>x</em> :

The answer is then D.
It is 0.088 this is just for the 20 characters so dont read this fhehfhryhfrhuehhfuyrhuyhfhefheufrhfyer
One and eighty five. 1x85=85 but 85 isnt prime>>>