Essential Mathematics Final Practice Exam Worksheet - Grade 12 Page 23
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50Name:
A round hole is drilled through the plate. The radius of the hole is 2.2 ± 0.1 cm.
r = 2.2 ± 0.1 cm
r
0
w = 8.5
cm
0.3
l = 15.5 ± 0.1 cm
For the circle, calculate (2 marks)
c) the maximum (upper limit) area
d) the minimum (lower limit) area
Calculate the area of the top surface of the metal plate remaining after the hole is drilled:
(2 marks)
e) the maximum (upper limit) area
f) the minimum (lower limit) area
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F i n a l P r a c t i c e E x a m
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