Geometry
posted by Sandy .
1. Find the diameter of a circle with a circumference of 50 mm. Round your answer to the nearest tenth.
a) 16.0 mm
b) 26.4 mm
c) 8.4 mm
d) 33.5 mm
2. Find the area of the circle with the given radius or diameter. Round your answer to the nearest tenth.
Diameter = 42.0 mm
a) 137.6mm2
b) 376.7 mm2
c) 1,384.74 mmÂ²
d) 6,027.0 mm2
My Answer.... Please Be Honest! :D >.< ;) :P <3
1. a) 16.0 mm
2. b) 376.7 mm2

Geometry 
Sandy
Please someone answer, Ms.Sue please anybody...? :( ??? :(

Geometry 
Sandy
NEED HELP!!! :( I'm new here so ..... i don't know :( ????!!!

Geometry 
Ms. Sue
Please be patient, Sandy. We are volunteer tutors who answer questions when we have the time.
1 is right. 2 is wrong.
Use this formula for the second problem.
A = pi * r^ 
Geometry 
Sandy
OK, I'm so so sorry. It would never happen again! OK thank you so much when i'm finish I'll will tell you the answer OK? :D

Geometry 
Sandy
Is it a) 137.6mm2 is the answer because that's what I got ?

Geometry 
Sandy
I'm so sorry but i'm in a huge rush ms.sue :( !

Geometry 
Ms. Sue
Nope.
Did you use this formula?
A = pi * r^2 
Geometry 
Sandy
Oops, I'm sorry i got confused the answer is pi(21)^2 = 1384.74

Geometry 
Ms. Sue
Right.
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