If each edge of a cube is doubled, how many times will its
surface area increases?
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1
Answer:
3 times
Step-by-step explanation:
TSA₁ of cube = 6a²
here a is the length of each edge.
If a becomes 2a,
TSA ₂=6(2a)²
=6×4a²
=24a²
TSA₁ : TSA₂ = 6a² : 24a²
= 1 : 4
the TSA increases by 3 times.
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