Question

The diameter of the Starbucks venti(large) lid is 3.3 inches. The tall(small) gas a diameter of 2.6 inches. What is the difference in the circumference of the two cups?

Answer 1

0.7π ≈ 2.2 inches

Explanation:

The circumference is computed from ...

C = πd

Then the difference in circumferences for two different diameters is ...

`C_2-C_1=\pi d_2-\pi d_1 = \pi(d_2-d_1)\\\\=\pi(3.3-2.6)=0.7\pi \quad\text{inches}`

0.7π ≈ 2.2

The difference in circumference of the two lids is about 2.2 inches.