Question

find the edge and lateral surface area of a cube whose total surface area is 864 cm2.​

Answer 1

Step-by-step explanation:

tsa=6A*A =864 ....so.... A*A= 144

so A= 12 =edge .......LSA= 4A*A=4*12*12 = 576

Answer 2

Answer:

12 cm

Step-by-step explanation:

total surface of cube=6a^2

864= 6a^2

864/6=a^2

144=a^2

12 cm = a

lateral surface =4a^2

=4*12*12

=576cm^2

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