Question

find the circumference of each circle to help crack the code and answer the did you know..? question below! (answers to 1dp). a circle with diameter 5; b circle with diameter 8; c circle with diameter 3.7; d circle with diameter 11; e circle with diameter 16; f circle with diameter 2.9

Explanation:

Step1: Recall circumference formula

The circumference $C$ of a circle is $C = \pi d$, where $d$ is the diameter.

Step2: Calculate Circle A's circumference

Diameter $d=5$
$C_A = \pi \times 5 \approx 15.7$

Step3: Calculate Circle B's circumference

Diameter $d=8$
$C_B = \pi \times 8 \approx 25.1$

Step4: Calculate Circle C's circumference

Diameter $d=3.7$
$C_C = \pi \times 3.7 \approx 11.6$

Step5: Calculate Circle D's circumference

Diameter $d=11$
$C_D = \pi \times 11 \approx 34.6$

Step6: Calculate Circle E's circumference

Diameter $d=16$
$C_E = \pi \times 16 \approx 50.3$

Step7: Calculate Circle F's circumference

Diameter $d=2.9$
$C_F = \pi \times 2.9 \approx 9.1$

Answer:

A: 15.7
B: 25.1
C: 11.6
D: 34.6
E: 50.3
F: 9.1