Physical Quantities and Measurements - Part 1 (Area)

1) Fill in the blanks:

a. A shape that we can draw on a flat surface or plain is called a (a)   .

b. The amount of surface occupied by a plane figure is called its (a)   .

c. For a solid object, the total area of its surfaces is called its (a)   .

d. Area is derived from (a)   and is expressed as the product of two lengths.

e. The SI unit of area is the ______ _____.

(a)  

f. Larger areas, like a plot of land, are measured in ____ or ________.

(a)  

g. A (a)   paper has fine lines that crisscross to make a grid of small squares.

3) Match units of area with it expressed in meters and find the correct pair

• 1 sq. cm = 1/10,000 sq. m

• 1 sq. km = = 1/10,000 sq. m

• 1 sq. mm = = 1/10,000 sq. m

• 1 hectare = = 1/10,000 sq. m

• 1 are = = 1/10,000 sq. m

2) Solve the sums using the figures formula (area):

a. square = side x side

= 6cm x 6cm

= (a)   sq. cm

b. triangle = 1/2 x b x h

= 1/2 x 12 cm x 10 cm

= 1/2 x 120 cm

= 120 cm/2

= (a)   sq. cm