Pls help I need a good grade
1 answer:
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Answer:
Part 1) The area of the circle is
Part 2) The circumference of the circle is
Step-by-step explanation:
step 1
The area of a circle is equal to
we have
---> the radius is half the diameter
substitute
step 2
The circumference of a circle is equal to
we have
substitute
Answer:
Step-by-step explanation:
Because is being multiplied by S, we can divide
from both sides of the equation. This will give us:
÷
But, that looks a bit hectic. Instead of dividing, you can multiply by the reciprocal (which is essentially how to divide fractions). So, instead of ÷
, you get:
×
When multiplying fractions, remember you can just multiply straight across-- numerator x numerator, then denominator x denominator.
By doing that, you get the fraction
cannot be simplified any more, so S=
is your answer :)
I hope this helps