Answer:
here the value of X should be 8 to make this proportion true
3/8=15/40
by cross multiplying
15*8=40*3
120=120
therefore the option C is correct
the answer is option C
hope it helps you
Answer:0.043
Step-by-step explanation:
Answer: 1/3.(√3/4)×40×40 ×5√(5