odalysesquermon
05.05.2020 •
Mathematics
The area of a circle is 144π in². What is the circumference, in inches? Express your answer in terms of \piπ.?
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Ответ:
24π inches
Step-by-step explanation:
The area of a circle is denoted by:
, where r is the radius. Here, we know that the area is A = 
, so we can plug this in to find r:
r = 12
The circumference is denoted by:
, where r is the radius. We've found the radius so just plug 12 in for r:
Thus, the circumference is 24π inches.
Hope this helps!
Ответ:
24π in
Step-by-step explanation:
Area = π × r²
144π = π × r²
r² = 144
r = 12
Circumference = 2 π × r
= 2 × π × 12
= 24π in
Ответ:
P = 2(L + W)
P = 2(4W + W)
P = 2(5W)
P = 10W
P = 10(13)
P = 130
answer
B. 130 inches