Surface area of three dimensional

Step-by-step explanation:

π×r² gets you the surface area of the circle on the bottom. You gotta remember πr². So π×(6cm)² = π×36cm² = 36π cm²

π×L×r gets you the surface area of the cone shape, where L is the diagonal length of the cone, or "sLant height". There are reasons, but I just trust the math pros on this. REMEMBER THIS.

a²+b²=c². Remember that? Pythagorean theorem. you can use it to figure out the length of the sides of a right triangle. This cone has a right triangle. Let's use it.

6²+8²=c², so 36+64=c², so 100=c², so c==10, AKA the diagonal L for our problem.

Ok, π×L×r gives us the area of the cone. r=6 L=10, making the cone have a surface area of 10cm×6cm×π = π×60cm² = 60πcm²

...And the bottom circle is 36π cm², So 36π+60π=96π

This is important to know. Are you sure you didn't just scan your whole homework paper?

36π+60π cm². Or 96π cm².

$4

step-by-step explanation:

$30×5=$150

$150 minus $130=$20

$20÷5=$4.

hope to and hope that my answer is brainliest.(follow me )

walter needs to make at least 5 more cookies but no more than 40. 5 ≤ x ≤ 40

step-by-step explanation:

20 ≤ x + 15 ≤ 55

subtract 15 from all parts

20-15 ≤ x + 15-15 ≤ 55-15

5 ≤ x ≤ 40

this means how many more cookies he has to make

walter needs to make at least 5 more cookies, but no more than 40 cookies; 5 ≤ x ≤ 40