SA = 2<span>(<span><span><span>wl</span>+<span>hl</span></span>+<span>hw</span></span><span>)
SA = 2((3)(13) + (9)(13) + (9)(3))
Multiply:
SA = 2(39 + 117 + 27)
Add:
SA = 2(183)
Multiply:
SA = 366</span></span>
If you’re trying to find the area of the step:
A=lwh
A=20•15•8
A=2,400 cubic inches
or 2,400 in ²
29
I hope this helps!
Thank you!!
Answer:
4.7 yd
Step-by-step explanation:
The horizontal lines in the diagram are parallel, so the angle of depression at D and the angle of elevation at F are congruent. So, you have a right triangle with the measure of one acute angle (F) and the length of the adjacent side (EF = 10 yd). You are being asked to find the opposite side (DE).
The mnemonic SOH CAH TOA reminds you of the necessary relation:
Tan = Opposite/Adjacent
Filling in the given information, you have ...
tan(25°) = DE/(10 yd)
Multiplying by 10 yd gives ...
(10 yd)tan(25°) = DE ≈ 4.663 yd ≈ 4.7 yd
