Question

Finf area of cuboid whose lenght is 11/2cm breath is 4cm and height is 21/2

Answer 1

QUESTION.


Finf area of cuboid whose lenght is 11/2cm breath is 4cm and height is 21/2


ANSWER.



FORMULA USED


SURFACE AREA OF CUBOID

$= 2(lb + bh + hl)$



SOLUTION

GIVEN



$length = \frac{11}{2} cm$



$breadth = 4cm$



$height = \frac{21}{2} cm$



Put in formula


we get,



$2(lb + bh + hl)$




$2(( \frac{11}{2} \times 4) + (4 \times \frac{21}{2} ) +( \frac{21}{2} \times \frac{11}{2} ))$





$2(22 + 42 + \frac{231}{4} )$




$2(22 + 42 + 57.75)$




$2(121.75)$



$= 243.5 {cm}^{2}$