Saturday

January 31, 2015

January 31, 2015

Posted by **Thomas** on Sunday, January 5, 2014 at 10:42pm.

a. 2 1/2 pi cm^2

b. 4 1/4 pi cm^2

c. 5 1/4 pi cm^2

d. 6 1/4 pi cm^2

e. 7 1/2 pi cm^2

please answer and explain

- math -
**Reiny**, Sunday, January 5, 2014 at 10:53pmSince the radius of the new circle is 1/2 of the original, and the radius is squared in the area formula, the new area must be 1/4 of the original

so what is (1/4) of 25 ?

- math -
**Thomas**, Sunday, January 5, 2014 at 10:56pmd. 6 1/4 pi cm^2

- math -
**Reiny**, Sunday, January 5, 2014 at 11:03pmcorrect

- math -
**ricardo**, Wednesday, March 5, 2014 at 3:39pmThe diameter of a circle is 10 meters. What is the area of the circle? (Use 3.14 for mc004-1.jpg and round to the nearest tenth.)

**Answer this Question**

**Related Questions**

summer math hw - one circle has a diameter of 10 inches. a second circle has a ...

8th grade math - circle A has a raduis that is twice the length og the raduis of...

MATH HELP PLEASE - You are given two different circles. The diameter of the ...

math - The number of square units in the area of circle P is equal to the number...

Geomatric series - A fractal is created: A circle is drawn with radius 8 cm. ...

8th grade math - The radius of circle M is 3 times the radius of circle P. If ...

math - I am supposed to find the area of a segment of a circle. The circle is ...

math - I am supposed to find the area of a segment of a circle. The circle is ...

Algebra - The area of a circle is given by the formula A+pier^2, where r is the ...

Math - Circle O is centered at the origin and has a radius of 5. Circle O' is ...