Find the length of the edge of a cube whose surface area is given as 54 cm².
A4 cm
B5 cm
C6 cm
D3 cm
Answer:
D. 3 cm
Read Explanation:
The surface area for a cube is given as
A = 6 (edge)².
Therefore, upon substituting the value for surface area in the above formula,
(edge)² = 54/ 6 cm²
= 9 cm²
After taking the square root, we get,
edge = 3 cm