Question

find the total surface area and lateral surface area and diagonal of the cube whose edge is : ( a ) 4.5cm answer = 121.5, 81, 7.79

Answer 1

(1) total surface area of cube

= 6l²= 6(4.5)²= 6×20.25= 121.5cm²

(2) lateral surface area

= 4l²= 4(4.5)²= 4(20.25)= 81cm²

(3) length of diagonal

= √3l= (1.73)(4.5)= 7.79

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Answer 2

Answer:

TSA=121.5

LSA=81

LENGTH=7.79

Step-by-step explanation:

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