Question

The total surface area of a cube is 726 cm2.Find the length of its edge.

Answer 1

T.S.A. of cube=6a^2

726. =6a^2

a^2 =726÷6

a^2=121

a=✓121

a=11

Length of the edge of cube is 11cm

Answer 2

Question:-

The total surface area of a cube is 726cm². Find the length of its edge

To find:-

The length of its edge

Answer:-

The length of the edge of cube is "11cm"

Given:-

Total surface area of a cube is 726cm²

Step-by-step explanation:-

Total surface area of a cube = 726cm²

⇒6×(side)²=726

⇒(side)²=726/6

⇒(side)²=121

⇒side = √121

⇒side = 11 cm

Hence, the length of the edge of cube is "11cm"