8. Volume: a squared b; Surface area: a squared times 2 plus 4ab volume: 2× 2× 5 = 20; Surface area: 2× 2× 2+2× 5× 4 = 48;

9. Because 330m/s = 330× 3600 ÷1000 (km/h), the fifth power of 1. 1* 10 is greater than1.

10, the fourth power of 8.6465438+00 * 365 = 3.1536 *10 to the seventh power (seconds)

A: Yes ~ ~ ~ ~.

1 1, the square of (1) 0. 1, the square of 1 = 1, 65438. The decimal point of the cardinal number moves one place left and right, the decimal point of the square number moves two places left and right, and so on.

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