Question

Object------------- Diameter (cm) ----- Circumference (cm)

Coin --------------------------- 3 ------------------------- 10
Flying disc -------------------23--------------------------- 28
Jar lid---------------------------- 8------------------------------25
Flower pot -----------------------15------------------------------47





Owen measured the diameter and circumference of four circles. Which one of his measurements is the least accurate?


Coin


Flying disc


Jar lid


Flower pot

Answer 1

Jar lid

Explanation:

If you look up the diameter and circumference of the jar lid, it would give you an answer and if you compare it the answers are diffrent. So what you wan to put is: "I know that the Jar lid is wrong because For a jar lid, the diameter is 8, but for the circumference its is 2.5, and on the chart the dimeter is 8 BUT the circumference is 2.5" Hope this help. :)

Answer 2

Answer: Flying disc

Explanation:

Hi, to answer this question we have to apply the next formula for each object:

Circumference(C) = π x diameter

• Coin

Diameter = 3

Circumference (measured) = 10

C (calculated) = π x d = π x 3 = 9.42

10≅9.42

• Flying disc

Diameter =23

Circumference (measured) = 28

C (calculated) = π x d = π x 23 = 72.25

72.25 ≠ 28

Not accurate

• Jar lid

Diameter =8

Circumference (measured) =25

C (calculated) = π x d = π x 8= 25.13

25 ≠ 25.13

• Flower pot

Diameter =15

Circumference (measured)=47

C (calculated) = π x d = π x 15 = 47.12

47 ≠47.12

Feel free to ask for more if needed or if you did not understand something.