11. Two similar solids are shown below.
A
Solid A has a height of 5 cm.
Solid B has a height of 7 cm.
5 cm
12
B
Diagrams not drawn to scale
7 cm
Mari claims that the surface area of solid B is more than double the surface area of solid A.
Is Mari correct?
You must justify your answer.
(2)
N

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