Question

For fun question, I saw this on the internet and saw the solution, explain logic. diagrams are encouraged, please give radical form and aprox form

find the area of the shaded area (units are inches)
show all work

Answer 1

Solutions

Formula =

Area = π × r^2


`Area = lw - 2pir^2 Area = (20)(10) - 2(3.14)(5)^2 Area = 200 - 2(3.14)(25) Area = 200 - 2(78.5) Area = 200 - 157 Area = 43 in^2`

Answer 2

A = lw - 2πr²
A = (20)(10) - 2(3.14)(5)²
A = 200 - 2(3.14)(25)
A = 200 - 2(78.5)
A = 200 - 157
A = 43 in²