Step-by-step explanation:
Area of square =side×side
=12×12
=144cm^2
Hope this helped! :)
Answer:
168.43524
Step-by-step explanation:
A=ah+bh+ch+1
2﹣a4+2(ab)2+2(ac)2﹣b4+2(bc)2﹣c4=7·6+7·6+7·6+1
2·﹣74+2·(7·7)2+2·(7·7)2﹣74+2·(7·7)2﹣74≈168.43524
Total number of yards of ribbon available = 25 yards.
Number of yards of fabric available = 30 yards.
Number of yards of ribbon a child need = 1.75 yards
Number of yards of fabric a child need = 2.8 yards.
<em>Total number of children participate in the activity for 25 yards of ribbon = 25/1.75 = 14.28 approximately 15 children.</em>
<em>Total number of children participate in the activity for 30 yards of fabric = 30/2.8 = 10.7 approximately 11 children.</em>
<h3>Therefore, maximum 11 children can participate in the activity because each child required both 1.75 yards of ribbon and 2.8 yards of fabric .</h3>
Angle 1&2 are complementary.
Therefore, 1+2 =90°
(x+3) +(3x-1)=90°
4x+2=90°
x= 22°
1= 25°
2=65°
