Question

The Volume of a cuboid is 84cm^3 with the height of 7cm. The least possible length of the diagonal of the base of cuboid is

Answer 1

(A)\[\sqrt{23}\] (B)\[\sqrt{24}\] (C)\[\sqrt{25}\] (D)\[\sqrt{144}\]

Answer 2

wat?

Answer 3

ia min class 9 i don't understand this

Answer 4

assume the base of cuboid is a square with length is x, so we have
x^2*7=84
x^2 = 84/7=12
x=sqrt(12)
now, to find the diagonal of base, u can use the formula: sqrt(2) * side base
= sqrt(2) * sqrt(12)
= ....

Answer 5

\[\sqrt{24}\]

Answer 6

right

Answer 7

just 1 question didn't understand ur
now, to find the diagonal of base, u can use the formula: sqrt(2) * side base part

Answer 8

i think i understood
is this diagonal of a square formulae?