alleryStart learning →The width of an 8 cm by 5 cm rectangle is increased by 3 cm. By how much does its area increase?
A64 cm2
B40 cm2
C24 cm2
D15 cm2
Answer & Solution
Correct answer: C. 24 cm2
The new area is 8 x 8 = 64 cm2 against 40 cm2 before, an increase of 24 cm2.
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