Answer:
a) Area of a rectangle = length × width
Area = 6138cm²
Width = 62m
length = Area / width
length = 6138/62
length = 99m
b) Perimeter of a rectangle = 2l + 2w
l = length
w = width
perimeter = 338m
length = 98m
338 = 2(98) + 2w
2w = 338 - 196
2w = 142
w = 71m
width = 71m
Hope this helps.