Question

what is the answer or how do you work it out

Answer 1

Answer:

120 =< area =< 170.

Step-by-step explanation:

Given,

Length = 16 cm

Width. = 9 cm

Error can be of 1 cm.

For upper bound,

we assume error is of 1 cm, in each case, and in upper direction.

i.e length = 17 cm

width. = 10 cm

Area = length * width

= 170 cm^2

For lower bound,

we assume same condition except the direction will be on lower side.

i.e length = 15 cm

width. = 8 cm

Area = 15 * 8 cm ^ 2

= 120 cm^2

Therefore, 120 =< area =< 170.