Question

a rectangle measures 8.5 cm by 10.7 cm, both correct to 1 decimal place. calculate the upper bound of the perimeter of the triangle

Answer 1

Answer: 38.6

Step-by-step explanation:

2(L+B)

Round to 0.05 (upper bound)

2(8.55+10.75) = 38.6

Answer 2

so it says to 1 decimal meaning that its rounded to 0.1, to get the ub or lb you divide 0.1 by = 0.05 which to find ub of 8.5 you add 0.05 = 8.55, ub of 10.7 is 10.7+0.05= 10.75.

to find perimeter: (2x10.75) + (2x8.55)= 38.6