Ariel is filling a giant beach ball with air. The radius of the beach ball is 30 cm

Which addition property is being illustrated below? (type commutative or associative) (6 + 7) + 1 = 6 + (7 + 1)

Acircle has a circumference of 28.36 units what is the diameter of the circle

Candy lives in the center of town. her friend darlene lives 28 miles to the east and her friend dana lives 21 miles north. approximately how far do dana and darline live apart ?