Homework Help: Geometry

Posted by Sandy on Tuesday, February 26, 2013 at 8:37pm.

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 mm²
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, Tuesday, February 26, 2013 at 8:44pm
Please someone answer, Ms.Sue please anybody...? :( ??? :(
Geometry - Sandy, Tuesday, February 26, 2013 at 8:45pm
NEED HELP!!! :( I'm new here so ..... i don't know :( ????!!!
Geometry - Ms. Sue, Tuesday, February 26, 2013 at 8:50pm
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, Tuesday, February 26, 2013 at 9:19pm
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, Tuesday, February 26, 2013 at 9:24pm
Is it a) 137.6mm2 is the answer because that's what I got ?
Geometry - Sandy, Tuesday, February 26, 2013 at 9:29pm
I'm so sorry but i'm in a huge rush ms.sue :( !
Geometry - Ms. Sue, Tuesday, February 26, 2013 at 9:32pm
Nope.

Did you use this formula?

A = pi * r^2
Geometry - Sandy, Tuesday, February 26, 2013 at 9:34pm
Oops, I'm sorry i got confused the answer is pi(21)^2 = 1384.74
Geometry - Ms. Sue, Tuesday, February 26, 2013 at 10:35pm
Right.

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