Friday

March 27, 2015

March 27, 2015

Posted by **HanuMath25/11** on Sunday, November 25, 2012 at 6:13pm.

- Geomatric series -
**Reiny**, Sunday, November 25, 2012 at 9:03pmarea = π(8)^2 + π(4)^2 + π(2)^2 + π(1)^2 + π(.5)^2

= 64π + 16π + 4π + π + (1/4)π

this is a GS where a = 64π and r = 1/4

but , rather than using the formula in this case it is just as easy to just add them up

total = 85.25π

check:

area = 64π( 1 - (1/4)^5)/(3/4) = 85.25π

**Answer this Question**

**Related Questions**

Geometry - A dartboard consists of five concentric circles. The radius of the ...

mathematics - The circle x2-2x+y2-4y-4=0 lies on the cartesian plane,question 2....

mathematics - The circle x2-2x+y2-4y-4=0 lies on the cartesian plane,question 2....

mathematics - The circle x2-2x+y2-4y-4=0 lies on the cartesian plane,question 2....

math - A circle has an area of 25 pi cm^2.If a circle is drawn within that ...

geometry - In the diagram, circle A is tangent to circle C, and segment BE is ...

Geometry - A circle of radius 1 is drawn in the plane. Four non-overlapping ...

Gradient of circle? - A circle has the equation x^2+y^2-4x+6y-12=0 and i have ...

geometry - In a circle with centre P,a chord AB is parallel to a tangent & ...

Math - A circle of radius 1 is drawn in the plane. Four non-overlapping circles ...