I. Significant Figures Solve the following problems: A. Round off 0.004286 to 3 significant figures. B. Round off 149.691 to 1 decimal place. C. Round off 30.562 to 3 significant figures.

6. The volume of a cube is 250 mm3. What is the length of one of the sides? (Express your answer in meters.)

What is the area of a circle which has a diameter equal to 3.138 cm? Hint The area is cm².

3.

Plz only do (d e f g and h)

Now you will use the ruler to measure the dimensions of a block of pure aluminum metal. Make sure you report both the uncertainty and an estimated digit with your answers. V [ Select ] 1 21 1.5 cm +/- .1 cm cm 1.38 cm +/- .01 cm What is the best measurement of the length of this block? 1.35 cm +/- .01 cm 1.3 cm +/- .1 cm 1.40 cm +/- .05 cm

Starting with the definition that 1.00 in. = 2.54 cm, find the number of kilometers in 3.107 miles, and the number of feet in 1.00 km.

a) Km? b) mm? c) inches? fuel mileage of a certain car is 28 mpg (mi/gal). What is it in units of km/L? 013km. ) gal

I need the answer to three significant figures. That's what I'm having trouble figuring out

1. Multiplication or division: keep the same number of significant figures in the product or quotient as is in the least precise factor. Examples: 3.1 * 25.6=79.360000... = 79 6.7/981.0=0.0068297655... = 0.0068 keep only 2 significant digits 2. Powers or roots: keep the same number of significant figures as in the original number. Example: Sqrt(38) 6.164414... keep only 2 significant digits = 6.2 (11.6)² = 134.5600000... = 135 Exercises 3. Addition or subtraction: Round off, to the number of decimal places determined by the number with the least number of places beyond the decimal point. Example: 31.5+24.61 +3.28+1.19 +0.762 +0.003 = 61.345 1. 3.9 * 78.9= = 61.3 (correct result) 2. 32.01 +96.321 +36.98 +0.00023 +28.9= 3. 26.9/98 = 4. 421 0.003 =