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Answer:
A. Cube
SA=6(s²)
1. 7cm
SA=6(s²)
SA=6(7cm)²
SA=6(49cm²)
Answer: SA=294c²
2. 5.3m
SA=6(s²)
SA=6(5.3m)²
SA=6(28.09m²)
Answer:SA=168.54m²
B. Rectangular Prism
SA=2lw+2wh+2lh
1. L=8cm W=7cm H=5cm
SA=2lw+2wh+2lh
SA=2(8x7)+2(7x5)+2(8x5)
SA=2(56)+2(35)+2(40)
SA=112+70+40
Answer: SA=222
2. L=4.6m W=9m H=11m
SA=2lw+2wh+2lh
SA=2(4.6x9)+2(9x11)+2(4.6x11)
SA=2(41.4)+2(99)+2(50.6)
SA=82.8+198+101.2
Answer: SA=382