Answer:
539.7
Step-by-step explanation:
Multiply 25.7 to 21 to get the answer.
cross multiply and solve for x. x is about 6.43
Gravity is below us which pulls u down
Given the area and the lngth, find the width by div. the area by 6:
12x + 15 4x + 5
width = -------------- = ------------
6 2
The answer would be B. Hope this helps :)