Question
the width of a rectangle is fixed at 27 cm. what lengths will make the perimeter greater than 70cm?
the length must be greater than _70_ cm
please check if this is correct.
thank you!!
the length must be greater than _70_ cm
please check if this is correct.
thank you!!
Answers
MathMate
"the length must be greater than _70_ cm" is a feasible but incomplete answer to the question "what lengths" meaning all possible lengths.
The width is 27 cm.
Let the length be L.
then perimeter P>70 is given by
2(27+L)>70
54+2L > 70
2L > 16
L > 8 cm
The width is 27 cm.
Let the length be L.
then perimeter P>70 is given by
2(27+L)>70
54+2L > 70
2L > 16
L > 8 cm