From the setup of the problem, the "length of the top of the bookcase, measured along the attic ceiling" will be the hypotenuse of a right triangle, the length "AB". We have both the angle between AB and AC and the length of AC (3.24 meters), so we can use trigonometric identities.
The cosine of the 40 degree angle between AB and AC is equivalent to the length of AC divided by the length of AB. Equivalently, we have:

where "h", the hypotenuse, is the length we want. Rearranging the formula to solve for h we have that

which is 4.2295... meters. Converting to centimeters (multiplying by 100) we have that h = 422.95... centimeters, or if we round the value, h = 423 centimeters.
Answer:
156
Step-by-step explanation:
Write 26% as
26
100
Since, finding the fraction of a number is same as multiplying the fraction with the number, we have
26
100
of 600 =
26
100
× 600
Therefore, the answer is 156
If you are using a calculator, simply enter 26÷100×600 which will give you 156 as the answer.
The gardening kit costs $33.25. Multiply $95 by 0.35.
Answer:
The value of the expression is 80.
Step-by-step explanation:
14 - 6 = 8.
10 x 8 = 80.