I got this wrong.... Do I have the correct amount of significant figures?

Question 31 1 / 4 poi A metal box is place on a wooden incline that makes an angle of 34.9 degrees above the horizontal. The box has a mass of 2.12 kg and starts to slide immediately. Set your coordinate so that the positive direction is down the incline. What is the acceleration of the box? The coefficient of static friction for this metal on wood is 0.48. The coefficient of kinetic friction for this metal on wood is 0.28. Give your answer to the proper number of significant digits. Provide all units as abbreviations, not words (i.e. km, not kilometers). If your unit contains an exponent, use the caret symbol ^ (shift-6). For example m^3 If your unit contains a fraction, use a slash with no extra spaces. For example m/s Answer: 3.36 m/s~ 2