Caitlin invested in a lifetime annuity that begins payments at age 65. Her life
expectancy is 88. Caitlin invested $1 no 900 in the annuity, which earns 4.1%
APR, compounded monthly. With this annu ty, what is Caitlin's monthly
payment amount!

Area of a Circle= (pi)(radius) squared

Find the area of each cake, then subtract the difference between those 2 answers to find the difference in area. Also remember the problem gives you diameter, but the area formula requires radius so you must divide the diameter by 2.

Vanilla Cake Area
A= (3.14)(8/2) squared
A=(3.14)(4) squared
A=(3.14)(4*4)
A=(3.14)(16)
A=50.24 inches

Chocolate Cake Area
A=(3.14)(10/2) squared
A=(3.14)(5) squared
A=(3.14)(5*5)
A=(3.14)(25)
A=78.5 inches

Difference in Area
Chocolate Area - Vanilla Area
= 78.5 - 50.24
= 28.26 inches difference

Hope this helped!! :)