You estimate that 200 a school concert. the actual attendance was 240 people. find the percent error to the nearest tenth of a percent

The percent error=16.7%

Step-by-step explanation:

Estimated number of people for the school concert =200

Actual number of people for the school concert =240

The percent error=

Hence, the percent error=16.7%

sin3a=12/15

step-by-step explanation:

since one side was multiplied by 3 the other side must also be multiplied by 3.

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