Question

Match the item of Column A with their correct pairs from Column B:
Column A
Column B
1. Germs
a. Scurvy
2. White blood cell
b. Rabies
3. Antibiotic
c. Rickets
d. Beriberi
4. Haemophilia
5. Calcium
e. Malaria
6. Iodine
f. Bleeder's disease
7. Plasmodium
g. Antigen
8. Ascorbic acid
h. Goitre
9. Thiamine
10. Hydrophobia
i. Phagocytosis
j. Bacteria
​

Answer 1

Answer:

We can apply the formula for surface area of a rectangular prism here. i.e.

A=2(l×w + h×l + h×w), where l is length, h is height and w is width.

As mentioned above, length = 5 cm, width = 9cm and height = 20 cm.

Therefore 2(5×9+20×5+20×9)=2(45+100+180)=2(325)=650. So the surface area of the brick is 650 square centimetres.