What is the exact area of a circle with a radius of 12 feet? a. 24π square feet b. 36π square feet c. 121π square feet d. 144π square feet

Option (d) is correct.

Area of circle = square feet.

Step-by-step explanation:

Given : Radius of circle is 12 feet

We have to find the area of circle with a radius of 12 feet and choose the correct option from the given options.

We know,

Area of circle =

Where r is radius of circle.

Given radius  of circle is 12 feet

Substitute r = 12 , we have,

Area of circle =

Simplify , we have,

Area of circle = feet²

Thus, Option (d) is correct.

rx and sx

step-by-step explanation:

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!