180 pounds in kg

The correct answer is: $81.65\text{ kg}$

Explanation

You convert pounds to kilograms using the exact factor $1\text{ lb}=0.45359237\text{ kg}$. Multiplying gives the precise result, then round to a practical number of significant digits.

Steps:

  1. Conversion factor: $1\text{ lb}=0.45359237\text{ kg}$
  2. Multiply: $$180\times0.45359237=81.6466266\text{ kg}$$
  3. Round to two decimal places: $$81.6466266\text{ kg}\approx81.65\text{ kg}$$

Therefore, 180 pounds is about $81.65\text{ kg}$ (exactly $81.6466266\text{ kg}$).

Related

A game is said to be fair if the expected value (after considering the cost) is 0. This means that in the long run, both the player and the “house” would expect to win nothing. If the value is positive, the game is in your favor. If the value is negative, the game is not in your favor. At a carnival, you pay $1 to choose a card from a standard deck. If you choose a red card, you double your money, but if you pick a black card, you do not get any. (A standard deck of cards has 52 cards. 26 of the cards are red.)