Question

A rectangle has an area of 12 square centimeters and a perimeter of 16 centimeters. Which of the following could be its dimensions?

2 cm and 6 cm
3 cm and 4 cm
1.5 cm and 8 cm
1 cm and 12 cm

Answer 1

i think its 2 and 6

Answer 2

@imqwerty

Answer 3

the correct dimensions will solve both of these equations simultaneously,
bh=12
,
2(b+h)=16


ie the dimensions will multiply to give twelve, and add to give 8

Answer 4

it is 2 and 6

Answer 5

you are right

Answer 6

👍

Answer 7

let the lenth and breath of rectangle be l and b
l x b = 12
l=12/b equation 1

and 2(l+b)=16
l+b=8
l=8-b equation2

eq1 = eq 2
12/b = 8-b
12=8b-b^2
b^2 -8b +12 = 0
(b-6)(b-2)=0

if b=6 l=2
if b=2 l=6

Answer 8

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