Rectangular prism A has a surface area of 25 square units and rectangular prism B has a surface area of 100 square units. Which statement accurately compares the dimensions of prism A to those of prism B ?(1 point)

Responses

Since prism B’s surface area is 4 times as large as prism A’s surface area, prism B’s dimensions are 8 times as large as prism A’s.
Since prism upper B ’s surface area is 4 times as large as prism upper A ’s surface area, prism upper B ’s dimensions are 8 times as large as prism upper A ’s.

Since prism B’s surface area is 4 times as large as prism A’s surface area, prism B’s dimensions are 16 times as large as prism A’s.
Since prism upper B ’s surface area is 4 times as large as prism upper A ’s surface area, prism upper B ’s dimensions are 16 times as large as prism upper A ’s.

Since prism B’s surface area is 4 times as large as prism A’s surface area, prism B’s dimensions are twice as large as prism A’s.
Since prism upper B ’s surface area is 4 times as large as prism upper A ’s surface area, prism upper B ’s dimensions are twice as large as prism upper A ’s.

Since prism B’s surface area is 4 times as large as prism A’s surface area, prism B’s dimensions are half as large as prism A’s.
Since prism upper B ’s surface area is 4 times as large as prism upper A ’s surface area, prism upper B ’s dimensions are half as large as prism upper A ’s.

1 answer

To compare the dimensions of rectangular prisms A and B based on their surface areas, it’s important to understand the relationship between surface area and dimensions. The surface area \( SA \) of a rectangular prism can be expressed as:

\[ SA = 2(lw + lh + wh) \]

where \( l \), \( w \), and \( h \) are the length, width, and height of the prism.

When the dimensions of a prism are scaled by a factor \( k \), the surface area is scaled by a factor of \( k^2 \).

In this situation:

  • Surface area of prism A: \( 25 \) square units
  • Surface area of prism B: \( 100 \) square units

The ratio of the surface areas is:

\[ \frac{SA_B}{SA_A} = \frac{100}{25} = 4 \]

This indicates that prism B’s surface area is 4 times that of prism A.

To find the relationship between their dimensions, since the surface area is scaled by a factor of 4, we need to take the square root of 4 to find the scaling factor for the dimensions:

\[ k = \sqrt{4} = 2 \]

Thus, if prism B’s surface area is 4 times that of prism A’s, then the dimensions of prism B are 2 times as large as those of prism A.

Therefore, the accurate statements from the options provided are:

Since prism B’s surface area is 4 times as large as prism A’s surface area, prism B’s dimensions are twice as large as prism A’s.