Workout
Question 1:
(a) 24cm² (b) 150cm² (c) 294mm²
Question 2:
(a) 76cm² (b) 86cm² (c) 810cm²
(d) 64cm² (e) 37cm² (f) 868cm²
(g) 292.2cm² (h) 484mm² (i) 34500cm²
Question 3: 864cm²
Question 4: 1.5cm²
Apply
Question 1: x = 3cm
Question 2: Cuboid B has the lowest surface area (440cm²)
Question 3: 600cm²
Question 4: He has only considered the top, front and right hand side, not the bottom, back and left hand side. So he needs to multiply his answer by 2. Also the units should be cm²
Question 5: (a) 8cm (b) 17cm (c) 1.5cm
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