is 1145 or 47/3 or 3/47
2007-01-03 13:13:15 · 7 answers · asked by Chris FIGggggg 1 in Science & Mathematics ➔ Mathematics
47/3
2007-01-03 13:18:15 · answer #1 · answered by Denise T 3 · 0⤊ 0⤋
Use Pythagoras' Theorem:
c^2 = a^2 + b^2
=> 28^2 = 19^2 + b^2
=> 784 = 361 + b^2
=> b^2 = 423
=> b = sqrt(423) = sqrt (9.47) = 3.sqrt(47).
2007-01-03 21:16:22 · answer #2 · answered by Scarlet Manuka 7 · 0⤊ 0⤋
w = â(28^2-19^2) = â423 = 3â47 = 20.57
2007-01-03 21:18:09 · answer #3 · answered by sahsjing 7 · 0⤊ 0⤋
If you're requiring that the answer be one of your 3 choices, then you're out of luck; of the first 6 answers
5 are essentially equivalent. The first answer is precise
3 x sq-rt 47; 4 of the remaining 5 are either similar or are approximations to this exact answer.
2007-01-03 21:24:30 · answer #4 · answered by answerING 6 · 0⤊ 0⤋
It's a right-angled traingle
Diagonal is the hypotenuse
Width = (28^2-19^2)^0.5
2007-01-03 21:17:15 · answer #5 · answered by no man 2 · 0⤊ 0⤋
use the pythagorean theorem: sqrt(28*28-19*19), which is just a litlte more than 20.
None of the answers above fits this.
2007-01-03 21:16:27 · answer #6 · answered by firefly 6 · 0⤊ 0⤋
the diagonal is the hypotenuse
a^2+b^2=c^2
19^2+b^2=28^2
361+b^2=784
b^2=423
b=20.57
2007-01-03 21:19:06 · answer #7 · answered by 7 · 0⤊ 0⤋