Question

Ken doesn't eat the crust on his pizza for each pizza estimate the length of the pizza he didn't eat then calculate the length.

a) radius 32cm
b) radius 12.7​

Answer 1

Part A:

The estimate of the length of the crust of each pizza is given as follows;

a) The estimate of the length of the crust of the pizza with radius, r = 32 cm is 198 cm

b) The estimate of the length of the crust of the pizza with radius, r = 12.7 cm is 76.2 cm

Part B:

a) The calculated length of the crust of the pizza with radius, r = 32 cm is approximately 201.06 cm

b) The calculated length of the crust of the pizza with radius, r = 12.7 cm is approximately 79.796 cm

Explanation:

Part A:

The estimate of the length of the crust of each pizza is given as follows;

a) For the pizza with radius, r = 32 cm

Length of crust = Estimate of the circumference of the pizza 2 × 32 × 3 = 198 cm

b) For the pizza with radius, r = 12.7 cm

Length of crust = Estimate of the circumference of the pizza 2 × 12.7 × 3 = 76.2 cm

Part B:

The calculated length of the crust of each pizza is given as follows;

a) For the pizza with radius, r = 32 cm

Length of crust = The circumference of the pizza 2 × 32 × π ≈ 201.06 cm

b) For the pizza with radius, r = 12.7 cm

Length of crust = The circumference of the pizza 2 × 12.7 × π ≈ 79.796 cm