Answer:
B
Step-by-step explanation:
using Pythagoras' theorem in the right triangle, then
c² = a² + b² =
+ 
c² = (4 × 3) + (9 × 2) = 12 + 18 = 30
take the square root of both sides
c =
→ B
C^2=a^2+b^2-2abcosC
13^2=10^2+11^2-2×10×11×cos(°)
169=100+121-220cos(°)
220cos(°)=100+121-169
220cos(°)=52
cos(°)= 13/55
°=cos-1(13/55)
°=76.328°
48 = 2(w+4) + 2w
48 = 4w+8
40 = 4w
w= 10 yd
A= 10 * 14
A = 140 yd
Answer:
The answer is letter E.........