Question

The radius of the Earth at the equator is approximately 6.4 x 10^6 metres
Calculate the circumference of the Earth at the equator. Give your answer in standard form, correct to
2 significant figures

Answer 1

Answer:

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Answer 2

Answer:

4.02x$10^{7}$ meters

Step-by-step explanation:

Circumference of a circle = 2×π×r

= 2x6.4x$10^{6}$xπ

= 4.02x$10^{7}$ meters