Question

Please help me with my math hw and please show ur work with a full explanation. Do not answer if you only know how to do one problem or you will be reported

Answer 1

118. $14*14-\pi*\frac{14}{2}^2=196-49\pi=42.14cm^2$
119. $\frac{20*20-\pi\frac{20}{2}^2}{2}=\frac{400-100\pi}{2}=\frac{86}{2}=43$
120. $2*(4*5)+2*(5*4)+(4*4)=4*4*5+4*4=80+16=96m^2$