Question

Find the approximated area of a circle whose radius is 7.8 cm.

Answer 1

Take into account that the area of a circle is given by:

$A=\pi r^2$

where,

r: radius = 7.8cm

π = 3.14

Replace the previous values of the parameters and simplify:

$A=(3.14)(7.8cm)^2\approx191.13cm^2^{}$

Hence, the area of the circle is approximately 191.13cm^2