Question

A box has dimensions 60 cm×38cm×25 cm.find the area of the required cardboard to make 5 such boxes

Answer 1

I'LL NOT TELL U THE SOLUTION BUT CAN GIVE A PROCESS SO THAT U CAN DO PRACTICE OF THIS QUESTION

Area of rectangle 1 (= l × h) + Area of rectangle 2 (= l × b) + Area of rectangle 3 (= l × h ) + Area of rectangle 4 (= l × b) + Area of rectangle 5 (= b × h) + Area of rectangle 6 (= b × h )

= 2(l × b) + 2(b × h) + 2(l × h) = 2(lb + bh + hl)

This gives us:

where l, b and h are respectively the three edges of the cuboid.