Step-by-step explanation:
Total surface area of cuboid= 2(lb+bh+hl)
= 298ft²=2(28+4x+7x)
= 149=28+11x
= 121=11x
= 11=x
Since it is an equilateral triangle, all of the sides are the same length.
So, x=14 :)
Hope this helps!
I think your answer is C correct me if I’m wrong
Answer:
k = -144
Step-by-step explanation:
