1.

On the basis of given measure determine surface area of cuboidal wooden log, cuboidal brick and box.

Answer»

(i) Surface area of cubical wooden log

= 6 a2

= 6 x (8)2

= 6 x 64

= 384 cm2

(ii) Surface area of brick

= 2 (lb + bh + hl)

= 2(9 x 5 + 5 x 3 + 3 x 9)

= 2 (45 + 15 + 27)

= 2 (87)

= 174 cm2

(iii) Surface area of box

= 2 (lb + bh + hl)

= 2 (150 x 40 + 40 x 70 + 70 x 150)

= 2 (6000 + 2800 + 10500)

= 2 (19300)

= 38600 cm2



Discussion

No Comment Found