Question

Hi ğ●●d m●rn¡ng t● @||.

Ans it ok ,
don't give irreverent ans I report it ​

Answer 1

(i) Box is to be open at top

Method 1:

Lateral Surface Area = Area of the four sides of the cuboid (Area of four rectangles on the sides) = 2 (length x height) + 2(width x height)

Area of sheet required = lateral Surface Area + Area of the base = 2 l h + 2 b h + l b

= [2 × 1.5 × 0.65 + 2 × 1.25 × 0.65 + 1.5 × 1.25] m2

= (1.95 + 1.625 + 1.875) m2

= 5.45 m2

(ii) Cost of sheet per m2 area = Rs 20

Cost of sheet of 5.45 m2 area = Rs (5.45 × 20)

= Rs 109