Question

Can someone please explain how to solve it ?? ​

Answer 1

if we look on one side, we already have one measurement. 4 cm. ok, that's the measurement on that side. look to the left now. that other side is also the same length, so we take that number and multiply it be 2 to get

$4 \times 2$

Wait! we're not done yet. look at the top. do you see the 3? well that's the width for the top of the rectangle. the bottom must be the same to right? so we get

$3 \times 2$

add both equations and you get

$(4 \times 2) + (3 \times 2)$

The answer is 14cm! Don't forget to label. ;)