Im pretty sure your answer is the last one
Because singular elements don't have numbers in them those are chemicals or mixes
So Zn and ZnCl
Explanation:
Add 4/3 to both sides and then do cross multiplying
First of all you have two of them. Convert all inches to feet.
1 foot = 12 inches
2 feet = 24 inches.
30 inches is a little harder
30/12 = 2.5 feet. Now you are ready to figure the problem
Top A
=====
Area = L * w
L = 6 feet
w = 2 feet
A = 2 * 6 = 12 Square feet
Top B
====
Area = 2.5 * 4
Area = 10 square Feet
Total Area = 10 + 12= 22 square feet
Cost
====
Square feet * 42
Cost = 22 * 42
Cost = $924
Take shelter in a basement or any where underground. It is the best way so you don;t get effected if you were in a building abouve ground because windows can break and dangerous items may fly in from the wind. Hope this helps
Answer and Clarification:
2 individuals need to reply and theres going to be a crown on both and you click the crown on the one you need to be brainliest yet whenever it's clicked it can't be change or fixed so pick admirably.