Question 193177
This is not in our textbook but an extra credit question on homework. Can someone help please?
What is the area and circumference of a circle with diameter 22 mm? (The instructor wants the exact solutions & wants us to include correct units with each!)This hurts!
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The radius is half of 22 mm,
r = 11 mm
Circumference = pi*d = 22*pi mms (the exact answer)
22*pi = ~ 69.115 mms (approximately)
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The area
A = pi*r^2
A = 121*pi square mms (exactly)
121*pi = ~ 380.133 mm^2 (apx)
No reason to panic.