The length of the prism is 32 cm, the width is 24 cm, the height is 44 cm, and the length of the diagonal of the base, segment BH, is 40 cm. Find the length of the diagonal of the rectangular prism, segment BE. Round the answer to the nearest tenth.

(1 point)

59.5 cm

46.6 cm

54.4 cm

51.2 cm

1 answer

To find the length of the diagonal of the rectangular prism (segment BE), we can use the 3D diagonal formula for a rectangular prism. The formula for the length of the diagonal \(d\) is:

\[ d = \sqrt{L^2 + W^2 + H^2} \]

where \(L\) is the length, \(W\) is the width, and \(H\) is the height.

Given:

  • Length \(L = 32 , \text{cm}\)
  • Width \(W = 24 , \text{cm}\)
  • Height \(H = 44 , \text{cm}\)

Now, we can substitute the values into the formula:

\[ d = \sqrt{32^2 + 24^2 + 44^2} \]

Calculating each term:

\[ 32^2 = 1024 \] \[ 24^2 = 576 \] \[ 44^2 = 1936 \]

Now, summing these values:

\[ 1024 + 576 + 1936 = 3536 \]

Now take the square root:

\[ d = \sqrt{3536} \approx 59.5 , \text{cm} \]

Rounding to the nearest tenth, the length of the diagonal of the rectangular prism (segment BE) is approximately:

\[ \boxed{59.5 , \text{cm}} \]