Question

C) the perimeter of a rectangle is 28cm and it's length is 8cm

find it's breadth
find its area
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Answer 1

Explanation:

oh, come on.

we know, the perimeter of a rectangle is

2×length + 2×breadth (or width)

therefore, we know

28 = 2×8 + 2×breadth = 16 + 2×breadth

divide both sides by 2

14 = 8 + breadth

subtract 8 from both sides

6 cm = breadth

the area of a rectangle is

length × breadth

in our case

8×6 = 48 cm²