Martin wants to add a metal border to his rectangular garden to keep out weeds. the length of the garden is 6 meters and the width is 4 meters. how much metal border will martin need?meters

Plz me i need i will give a brain

Two planes leave an airport at the same time, one flying east, the other flying west. the eastbound plane travels 20 mph slower. they are 1600 mi apart after 2 hr. find the speed of each plane.

Having a hard time understanding this question (see attachment).