Question

What is the surface are of a rectangular prism of the length is 18cm the width 6cm and the height 3cm

Answer 1

The surface area of rectangular prism is 360 square inches

Solution:

Given that rectangular prism of the length is 18 cm the width 6 cm and the height 3 cm

To find: Surface area of rectangular prism

The Surface area of rectangular prism is given by formula:

$A=2(wl+hl+hw)$

Where,

"l" is the length and "h" is the height and "w" is the width of prism

From given,

l = 18 cm

w = 6 cm

h = 3 cm

Substituting the values in formula,

$A = 2((6 \times 18) + (3 \times 18) + (3 \times 6))\\\\A = 2(108+54+18)\\\\A = 2 \times 180\\\\A = 360$

Thus surface area of rectangular prism is 360 square inches