The length of a piece of thread is 4.5 m to the nearest 10 cm. The actual length of the thread is Lem. Find the range of possible values for L, giving you answer in the form ...

Can somebody explain me this question please my teacher explained me once but his explanation not very clear

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the answer is b.)

< 1=< 2

215.92 dollars is the answer

answer:   28.56 feet (approx)

step-by-step explanation:

since, triangle abc has measure of angle c equal to 55 degrees, measure of angle abc equal to 90 degrees, and length of bc equal to 20 feet.

we have to find out the measurement of segment ab.

therefore, tan 55° =

but bc = 20 feet.

⇒ tan 55 ° =  

⇒ ab = 20 × tan 55 °

⇒ ab = 20 × 1.42814800674

⇒ ab = 28.5629601348   ≈ 28.56 feet