The weight of a 170 cm steel bar will be 5 Kg
Step-by-step explanation:
Derek uses a 136 cm flat steel bar that weighs 4 kg to make rack in the garage.
1 kg = 1000 gm
So the weight of 1 cm steel bar will be
kg
Weight of 1 cm bar =
gm
Let the weight of a 170 cm steel bar will be
×
gm
⇒
×
gm
⇒ 5000 gm
⇒5 kg
Hence, the weight of a 170 cm steel bar will be 5 Kg
Sinx=1/2
sin30=1/2
therefore x=30 degree
Circumference =

When you plug that in you should have

Solve that and you have your answer(: I would recommend rounding to the nearest hundreth
Answer:
The answer to this question is A