i am using a graduated cylinder to measure the volume of my keys. before i place the keys in, the volume is…

i am using a graduated cylinder to measure the volume of my keys. before i place the keys in, the volume is 30 ml. after i place the keys in, the volume is 51 ml. what is the volume of my keys?\na 17 cm^3\nb 21 cm^3\nc 7 cm^3\nd 22 cm^3

i am using a graduated cylinder to measure the volume of my keys. before i place the keys in, the volume is 30 ml. after i place the keys in, the volume is 51 ml. what is the volume of my keys?\na 17 cm^3\nb 21 cm^3\nc 7 cm^3\nd 22 cm^3

Answer

Explanation:

Step1: Calculate the volume of keys

The volume of the keys is equal to the final volume minus the initial volume. $$V = 51 - 30$$

Step2: Simplify the expression

$$V=21\space mL$$ Since (1\space mL = 1\space cm^{3}), so (V = 21\space cm^{3})

Answer:

B. (21\space cm^{3})