A curtain manufacturer uses a 909090-yard roll of material to make 777 identical curtains. There was 7.757.757.75 yards of mater
1 answer:
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Answer:
see explanation
Step-by-step explanation:
The perimeter is the sum of the 3 sides, that is
perimeter = 8 + 12 + 17 = 37 cm
To use Heron's formula for area (A)
A =
where a, b and c are the lengths of sides and s the semi perimeter
s = 37 ÷ 2 = 18.5
let a = 8, b = 12 and c = 17, then
A =
=
= ≈ 43.52 cm² ( to 2 dec. places )
4/15 = 0.266666....
1/6 = 0.6666666 ....
÷ 
=
0.04444444...
1/6 = 0.6666666 ....
0.04444444...