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ladessa [460]
3 years ago
13

URGENT PLZ HELP

Mathematics
1 answer:
defon3 years ago
3 0

Answer:

33.4 cm

Step-by-step explanation:

Given:

θ = 31°

Arc length of PR = 9 cm

Required:

Diameter

Solution:

Diameter of the circle = 2*radiius = 2*PQl

Arc length = θ/360 × 2πr

Plug in the values into the equation

9 = 31/360 × 2πr

9 = 0.54r

9/0.54 = r

16.6666667 = r

r = 16.7 cm

Radius = 16.7 cm

Therefore,

Diameter = 2*radius = 2*16.7 = 33.4 cm

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