Answer:
Length of the prism is 9 cm.
Step-by-step explanation:
We are given,
A rectangular prism with volume 72 cm², width 2 cm and height.
As, we know,
Volume of a rectangular prism = Length × Width × Height
i.e. 72 = Length × 2 × 4
i.e. 72 = Length × 8
i.e. Length =
i.e. Length = 9 cm.
Hence, the length of the prism is 9 cm.
Given:
The equation is:
To find:
The error in the given equation and correct it.
Solution:
We have,
Taking left-hand side, we get
It is not equal to right-hand side . In the right hand side, there must be a negative sign instead of positive sign.
Therefore, .