Answer:
18.7 cm²
Step-by-step explanation:
To work out the area of a triangle you have to use the formula

Where "B" is the base and "H" is the height
Since these are decimals, I like to convert them into fractions which makes them easier to calculate with
The base is 4.25 cm which will turn into 
The height is 8.8 cm which will turn into 
Now we use the formula


→ Convert to improper fractions

→ Simplify

→ Convert into decimal
18.7
I don't know but can you help me find it too.
5/$3.00 is the unit rate. Hope it helps!
Circumference (Perimeter)
= diameter * pi
= 4 * 3.14
= 12.56 yd

Differentiate both sides, treating
as a function of
. Let's take it one term at a time.
Power, product and chain rules:



Product and chain rules:




Product and chain rules:




The derivative of 0 is, of course, 0. So we have, upon differentiating everything,

Isolate the derivative, and solve for it:


(See comment below; all the 6s should be 2s)
We can simplify this a bit by multiplying the numerator and denominator by
to get rid of that fraction in the denominator.
