5x+y=27 y=4x using substitution method
2 answers:
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Answer:
Step-by-step explanation:
<h2>Given that :</h2>- The radius of a circle is 2.9 in.
- Find the circumference to the nearest tenth.
- circumference = 2 × π × r
where,
- π = 22/7
- r = 2•9 inches
⟼ c = 2πr
⟼ c = 2 × 22/7 × 2•9 inches
⟼ c = 2 × 3•14 × 2•9 inches
⟼ c = 6•28 × 2•9 inches
⟼ c = 18•21 inches.
<h2>Round to the nearest tenth :</h2>⟼ c = 18•21 inches
⟼ c = 20 inches
∴ circle circumference is 20 inches .