the lengths of the rectangle have been measured to the nearest tenth of a metre work out the following, writing down all the figures on your calculator display: a) The upper bound for the perimeter of the rectangle. b)The lower bound for the area of the rectangle. rectangle lengths = 15.8m width = 5.2m

Perimeter = 42.2 m

              Area = 81.1125 m²

Step-by-step explanation:

                                                      Lower     Upper

Length is given as 15.8    -->         15.75 ≤ L < 15.85

width is given as 5.2       -->           5.15 ≤ w < 5.25

Perimeter = 2L + 2w     (Upper bound)

                = 2(15.85) + 2(5.25)

                =   31.7      +   10.5

                =   42.2

Area = Length x width     (Lower bound)

        = 15.75 x 5.15

        = 81.1125

pay attention in your classes and concentrate the best thing you can do to raise your test scores is to pay attention when you're supposed to be learning the material: in class!

take good notes.

do your homework.

use mnemonics and other tricks.

do practice tests.

note: the best i know.

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step-by-step explanation: