Question #c12f2

1 Answer
Jan 13, 2018

#25pi " cm"^2 ~~78.54" cm"^2#

Explanation:

The formula for the area (#color(red)(A_circ)#) of a circle with radius #color(blue)r# is
#color(white)("XXX")color(red)(A_circ)=picolor(blue)r^2#
where #pi# is a standard constant approximately equal to #3.14159#

Substituting #color(blue)5# for #color(blue)r# in the formula gives the Answer above.