Posted by **Shelby** on Saturday, May 4, 2013 at 8:28pm.

The area of a parallelogram is 420 centimeters squared and the height is 35 cm. Find the corresponding base. Be sure to show all work and label your answer

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**Ms. Sue**, Saturday, May 4, 2013 at 8:29pm
A = b * h

420 = 35h

420/35 = h

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**Shelby**, Saturday, May 4, 2013 at 8:34pm
can you help with this one

Find the area of the regular polygon. Round your answer to the nearest tenth.

the individual sides are 10 the radius is 13.07

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**Damon**, Saturday, May 4, 2013 at 8:37pm
I did not answer this earlier because it makes no sense. A regular polygon is not a circle and has no radius. Do you mean a circle passing through the midpoints of the sides or through the corners or what ?

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**Ms. Sue**, Saturday, May 4, 2013 at 8:38pm
This site may help you.

http://www.mathsisfun.com/geometry/regular-polygons.html

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**rebecca**, Saturday, May 4, 2013 at 8:51pm
Find the area of the regular polygon. Round your answer to the nearest tenth.

Question 18 (2 points)

Find the area of the regular polygon. Round your answer to the nearest tenth.

a 673.3 inches squared

b 483.2 inches squared

c 336.6 inches squared

d 966.4 inches squared

the 10 is alone the outside of one of the sides and there is a dot in center and a dashed line that goes to one segmement. is is 13.07

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**Damon**, Saturday, May 4, 2013 at 8:55pm
If your radius is to the corners, then

10 = 2* 13.07 sin (180/n)

sin (180/n) = .382555

180/n = 22.5

n = 8 sides

360/8 = 45 = top angle of each isoceles triangle

half of that has hpotenuse of 13.07 and base of 5

area of each of those 16 triangles = (1/2) (5)(13.07 cos 22.5) = 30.2

16*30.2 = 483

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