Question
What is the approximate circumference of Earth at the
equator?Solution
The Earth's circumference measures approximately 40,075 km at the equator. As an oblate spheroid, Earth is slightly flattened at the poles (with a polar circumference of about 40,008 km) and bulges at the equator. The equatorial diameter is approximately 12,742 km.
[(82 × 162)/12] - 28 = ?
`sqrt(5476)` + 40% of 1640 = ? `xx` 4 - 2020
30% of 2200 +’?’ x 50 – 1020 = 11x 306 + (√ 2250 ÷ 0.1)
Evaluate: (768÷16)×(125÷25)−(81÷9)×12
(122 - 82 ) X ? = 90% of 500 - (90 - 25) X 2
276 ÷ 11.5 + 12 = ? x 3
56 × 18 + ? × 21 – 49 × 12 = 63 × 26
20 + 160/? × 20 = 420
132 × 3 ÷ 11 + 67 − ? = 64 ÷ 8 × 2
2 X 25 + (30% of 80) ÷ (10% of 120) = ?