Answer:
A = 25[tex]\pi[/tex] [tex]cm^{2}[/tex] or A = 78.54 [tex]cm^{2}[/tex]
Step-by-step explanation:
The diameter of a circle is just the radius two times, in this case, the diameter is 10. This means that the radius would be 5. Therefore we can use 5 as our r variable in the formula for area (A=[tex]\pi r^{2}[/tex]),
A = [tex]\pi 5^{2}[/tex], simplify [tex]5^{2}[/tex]:
A = 25[tex]\pi[/tex]
From here you can leave the asnwer in its excat form, 25[tex]\pi[/tex], or you can simplify it by multiply 25 times pi to get 78.54 (rounded to the hundreths place).
