17) The diameter of a circular placemat is 30cm. Find the circumference to the nearest millimetre.
the answer is 943mm but how please tell and solve it
please tell step by step...
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Answered by
1
Answer:
The circumference of circle = 2\pi r2πr
Also,
The diameter of circle (d) = 2r
The circumference of circle = \pi dπd
= 3.14 × 30 cm
= 94.2 cm
∵ 1 cm = 10 millimeter
= 94.2 × 10 millimeter
= 942 millimeter
Thus, the circumference to the nearest millimetre is "942 millimeter".
Answered by
4
Answer:
943mm
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