what is a quantity such as mass, length, or speed which is completely specified by its magnitude and not direction called?

Scalar quantity

Explanation:

Scalar quantities are measurements that consist of only a magnitude which is measured in numbers only. For example speed is a magnitude because it measures how fast something is going.

Vector quantities are measurements that include a magnitude and direction which means there is a number measurement and a direction associated with that measurement. For example, velocity is a vector quantity because there is a measurement of speed, and it also includes the direction of the speed.

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2