Not sure but I think it's (3)
H = height of triangle
b = length of triangle base
A = area of triangle
Recall the formula for area of a triangle :
A = 1/2 bh
Plug in what was given in the problem :
h = b - 5
A = 42
A = 1/2 bh
42 = 1/2 b (b-5)
17²-8²=225
√225= 15
therefore both x and y are 15 ft
D. 8 mm by 10 mm by 4 mm
20 mm by 8 mm by 2 mm
8 x 10 x 4 = 320 mm
20 x 8 x 2 = 320 mm
Answer:
224 cubic in
Step-by-step explanation:
l*w*h / 3
12*14*4=672
672/3=224 cubic in
