A certain number of cubic yards of concrete will be poured to form a driveway. The concrete will fill a space that is a right rectangular prism that is 18 feet wide, 42 feet long, and 6 inches thick. What are the dimensions of this space (width by length by thickness) in yards? (Note: 1 foot = 12 inches and 1 yard = 3 feet) A) 6 yards by 14 yards by yard B) 6 yards by 14 yards by yard C) 54 yards by 126 yards by 72 yards D) 54 yards by 126 yards by 216 yards

6 yards by 14 yards by 0.5 yard 

Step-by-step explanation:

Given that the concrete will fill a space that is a right rectangular prism that is 18 feet wide, 42 feet long

The cubic feet of the space =

242 × 18 × 6/12= 378 cubic ft

Given that 1 foot = 12 inches and 1 yard = 3 feet

6 yards by 14 yards by yard will give

( 6×3 )×(14 × 3)×(0.5×3) = 378 cubic ft

the dimensions of this space must be equal to the concrete dimensions space that is a right rectangular prism

the perimeter is increased by a factor of 2

b.my answer is b.

brainliest