Answer:
32<-3x+60 ;10 hours
Step-by-step explanation:
8x + 6 = 3x + 21
8x - 3x = 21 - 6
5x = 15
5x/5 = 15/5
x = 3
Diameter of the bigger semi-circle is 15 m
circumference of the bigger semi-circle = πd = 15π
diameter of the smaller semi-circle = 15 - 2(1.25) = 15 - 2.5 = 12.5 m
circumference of the smaller semi-circle = πd = 12.5π m
Total length of the segments between the two circles = 11(1.25) = 13.75 m
Total length of wrought iron used = 15π + 12.5π + 13.75 = 100 m
Answer:
D
Step-by-step explanation:
cos(theta) = B/H
cos(51)= AC/58
AC=36.5
