The sum of length breadth and depth of a cuboid is 19cm and of its diagonal is 11cm.Find surface area of the cuboid
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Hey mate
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Let a , b , c be the dimension of a cuboid.Accordingly:-
a+b+c=19……………….(1)
a^2+b^2+c^2=(11)^2 =121……………(2)
Surface area= 2[a.b+b.c+c.a]
=(a+b+c)^2-(a^2+b^2+c^2)
=(19)^2–121
=361–121
=240 sq cm. , answer.
Hope it helps !
========
Let a , b , c be the dimension of a cuboid.Accordingly:-
a+b+c=19……………….(1)
a^2+b^2+c^2=(11)^2 =121……………(2)
Surface area= 2[a.b+b.c+c.a]
=(a+b+c)^2-(a^2+b^2+c^2)
=(19)^2–121
=361–121
=240 sq cm. , answer.
Hope it helps !
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