Question

Alex has trained his puppy, Popper, to jump through a ring. According to Alex's measurements and calculations, the ring has a diameter of 3.5 feet. What is the ring's circumference (use 3.14 for pi)?

Answer 1

10.99 ft

Explanation:

Given: The ring has a diameter of 3.5 feet

To find: The ring's circumference

Formula:
`C = 2\pi r`

Solution: To calculate the circumference of a circle, multiply the diameter of the circle with π (pi). The circumference can also be calculated by multiplying 2 × radius with pi (π = 3.14).

C = pi × 2r

C = pi × diameter (3.5)

C = 3.14 × 3.5 = 10.99

Hence, the ring's circumference is 10.99 ft

Answer 2

11 ft

Explanation:

The ring takes circular shape and for a circle, circumference is given by

`C=\pi d`

Where C represent circumference and d is the diameter.

Taking use 3.14 for pi as instructed and substituting 3.5 ft for diameter d then

C=3.14*3.5=10.99 ft

Rounding off, this is approximately 11 ft