PLEASE HELP!!!!!!!!!!!
What is the exact area of a circle with a diameter of 25 m?

Question

PLEASE HELP!!!!!!!!!!!
What is the exact area of a circle with a diameter of 25  m?

campbell_st · Answer

find the radius

then use 

$$A = \pi \times r^2$$

where r = radius

campbell_st · Answer

the alternative us to let 

r = 25/2  

then its 

$$A = \pi \times (\frac{25}{2})^2$$

anonymous · Answer

formula for area is pi*d^2/4

pi is 3.14   d=25
so area is( 3.14*25*25)all over4
=490.87

campbell_st · Answer

but that's not exact.... 

make it 

$$A = \pi \times \frac{25^2}{2^2}$$

and leave the answer as a fraction

anonymous · Answer

yeah i agree with u i dont think it is 490 either  i think it is 49.73 @campbell_st

campbell_st · Answer

well what is 25^2 = ?

anonymous · Answer

50 @campbell_st

campbell_st · Answer

no you need 25 x 25 =

anonymous · Answer

i mean 625 @campbell_st

campbell_st · Answer

great so the exact area is 

$$A = \frac{625 \times \pi}{4}$$

all you need to do is remove the multiplication sign from the numerator to get and exact value

anonymous · Answer

thanks :) @campbell_st

radar · Answer

You left off something that some teachers would take off some.
The answer did not include the units for area, in this case sq meters.