Calculate the upper & lower bounds of the length marked x cm in the rectangle (below)
the area and length are both accurate to 2 s.f
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Answer:
Upper bound = 10.5 Lower Bound = 9.5
Step-by-step explanation:
As they want the answer to 2sf, you add/subtract 0.5 for the upper/lower bound.
Area/length = width
100/10 = 10
10+0.5 = 10.5
10-0.5=9.5
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