Which shows how to calculate the area of the playground?

• A =(40)(25)+(18)(20)

A=(40)(25)+ (22)(20)

• A=(20)(25) + 3 (25)(20)

• A=(20)(18)+ }(40)(25)

Acentral angle measuring 160 degrees intercepts an arc in a circle whose radius is 4. what is the length of the arc the circle formed by this central angle? round the length of the arc to the nearest hundredth of a unit. a) 4.19 units b) 6.28 units c) 12.57 units d) 12.57 square units