Cartucho1978
24.02.2021 •
Mathematics
Triangle ABC has the following characteristics. Angle A is right angle. AB=8. AC= 15. Find BC
A. 12
B. √161
C. 17
D. 23
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Ответ:
use pythagorean
a^2 + b^2 = c^2
8^2+15^2= c^2
289=c^2
sqrt both sides
c=17
BC=17
Ответ:
Length 2x
Width x
Perimeter = 2x + x +2x + x = 72
6x =72
x = 72/6
x = 12 cm
Solution:
Length = 2x = 2(12) = 24cm
Width = x >12cm
Perimeter = 24cm + 12cm + 24cm + 12cm = 72cm