Math, asked by sana4225, 1 year ago

a cube whose edge is 21cm long has circle of diameter 21cm on each of its faces painted black. what is the total area of unpainted surface of the cube

Answers

Answered by laxmi6767choudhary

12

Answer:cube edge=21 cm........( given)

Diameter=21 cm

Therefore radius =21÷2= 10.5cm

Total surface area of cube =6lsqare

= 6(21) square

= 6×440

= 2640 sq.cm

Step-by-step explanation:

laxmi6767choudhary: Hope it helps you

sana4225: the answer 567cm^2

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