the formula to find the surface area of a sphere is to take the radius of the sphere and square
it and multiply that amount by pi and then multiply that by 4. this is written algebraically as
s=4πr
2
, where s is the surface area, r is the radius, and the value of π is 3.14. rewrite the
equation to solve for the radius of the sphere if you know the sphere’s surface area. then
estimate the radius of a sphere given a surface area of 500 meters2
.

mental cunning

explanation:

he is often referred to as a man of twists and turns

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!