Answer:
BC = 88.88
Step-by-step explanation:
Comment.
This looks like an example of the cos law.
Givens
AB = 100 m
<A = 60 degrees
AC = 70 m
Cos(60) = 1/2
BC = ?
Formula
BC^2 = AB^2 + AC^2 - 2*AB*AC * Cos(60)
Solution
BC^2 = 100^2 + 70^2 - 2*100*70 * 1/2 1/2 and 2 cancel out
BC^2 = 10000 + 4900 - 7000
BC^2 = 7900 Take the sqr root of both sides
√BC^2 = √7900
BC = 88.88
P= 2 ( L+W)
22= 2(6+ W) you plug in what you know and solve for W
22= 2(6+5)
22=2(11)
22=22
W= 5 cm
Use the formula 4/3 x pi x r^3 with R being 9
You get 3053.6
Hi ky name is ni ole and i xont know the ansewer bye
