The average U. S. resident uses 100 gallons of water per day. The population of the United
States is about 3.23 x 108. About how
many gallons of water do U. S. residents use
each day? Express your answer in scientific
notation.

3.4884 x 10^4

Step-by-step explanation: Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the 10. If the decimal is being moved to the right, the exponent will be negative. If the decimal is being moved to the left, the exponent will be positive.

i belive those are the ones that are under 90 degreese.

126.66 m²

step-by-step explanation:

the pertinent area formula is a = πr², where r is the radius.

here, a = π(6.35 m)² = 40.32π, or approximately 126.66 m²