Given : – The length of the rectangular prism is , l = 8 cm.

The width of the rectangular prism is , w = 5 cm.

The height of the rectangular prism is, h= 3 cm.

Find :- Volume of a rectangular prism, V = ?

Total Surface Area of a rectangular prism, TSA = ?

Calculation :-

Now,

Volume of a rectangular prism, V = l × w × h

V = 8 × 5 × 3

V = 120 cm³

Total Surface Area , TSA = 2(lw + wh + lh)

TSA = 2(8×5 + 5×3 + 8×3)

TSA = 2(40 + 15 + 24)

TSA = 2(79)

TSA = 2 × 79

TSA = 158 cm²

Hence , The Volume of Rectangular Prism is 120 cm³ and The Total Surface Area is 158 cm².