Answer:
1. a.) A = [tex]\pi r^{2}[/tex] where the value of r = 7 units
b.) A = [tex]\pi \times 7^{2} = \pi \times 49 = 49\pi = 49\times 3.1414 = 153.93 units^2[/tex]
Step-by-step explanation:
1.) a.) the area of a circle with a radius of 7 units
is given by Area, A = [tex]\pi r^{2}[/tex] where the value of r = 7 units
b) [tex]\therefore[/tex] A = [tex]\pi \times 7^{2} = \pi \times 49 = 49\pi = 49\times 3.1414 = 153.93 units^2[/tex]