Each circles radius diameter circumference and formula used needs to be found I need help urgently and I’ll give brainliest!

Step-by-step explanation:

1.

radius = 10 in

diameter = 10 × 2 = 20 in

formula = π × d

circumference = π × 20 = 62.83 in

2.

radius = 12 ÷ 2 = 6 ft

diameter = 12 ft

formula = π × d

circumference = π × 12 = 37.70 ft

3.

radius = 3 m

diameter = 3 × 2 = 6 m

formula = π × d

circumference = π × 6 = 18.85 m

4.

radius = 18 ÷ 2 = 9 cm

diameter = 18 cm

formula = π × d

circumference = π × 18 = 56.55 cm

answer: the area of the parallelogram below is 42 square meters.

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