Given:
- Area of rectangular prism ( cuboid ) = 448 cm²
To find out:
Find the height, h ?
Formula used :
Area of rectangular prism ( cuboid ) = 2 ( lb + bh + hl )
Solution:
We know that that,
Area of rectangular prism ( cuboid ) = 2 ( lb + bh + hl )
=> 448 = 2 ( 14 × 6 + 6 × h + h × 14 )
=> 448 = 2 ( 84 + 6h + 14h )
=> 448 = 2 ( 84 + 20h )
=> 448 = 168 + 40h
=> 40h = 448 - 168
=> 40h = 280
=> h = 280/40
=> h = 7 cm
