Peter has just purchased a small rectangular fish tank that holds 910 milliliters of water. The tank has a width of 7 cm and a height of 10 cm.

What is the length of the fish tank?

(1 milliliter is equal to 1 cubic centimeter)
A.
13 cm
B.
14 cm
C.
15 cm

the length of the fish tank is   . Correct option is A)

Step-by-step explanation:

Here we have , Peter has just purchased a small rectangular fish tank that holds 910 milliliters of water. The tank has a width of 7 cm and a height of 10 cm.  We need to find What is the length of the fish tank . Let's find out:

The fish tank is in the shape of cuboid , and we know that volume of cuboid :

⇒

Now , according to question we have following parameters :

Therefore , Putting theses values in above equation we get :

⇒

⇒

⇒

⇒

Therefore , the length of the fish tank is   . Correct option is A)

Option A) 13 cm is the length of the fish tank.

Step-by-step explanation:

Peter has just purchased a small rectangular fish tank that holds 910 milliliters of water.

(1 milliliter is equal to 1 cubic centimeter)

⇒ Volume of the fish tank = 910 cubic centimeter

We know that, Volume of a cuboid = length × width × height

⇒ 910 = x × 7 × 10

⇒ 910 = 70x

⇒ x = 910 / 70

⇒ x = 13 cm

Therefore, Option A) 13 cm is the length of the fish tank.

the mistake in the pattern is that :

b. the decimal point was moved one too many place values each time

the correct pattern could be made by :

b. moving the decimal point to the right the same numbers of place values as the exponents