Question

1.3 Metric Measurements (Length) The metric unit for measuring length is the meter. In this exercise, students will measure the leng th of various objects. Procedure . How many Obtain a small metric ruler. How many centimeters are shown on the ruler? 1. millimeters are shown? Measure the length of your index finger to the nearest mm. How long is your finger? 2. Select three small wooden blocks. Measure the length, width, and height of each block in cm. Record those values below. Volume is calculated by multiplying length X width X height. Cal- culate the volumes of the three blocks in cm. 3. Volume (cm) Height (cm) Width (cm) Length (cm) Block X X 2 X X 3 X What is the volume of block 1 in mm'? a. Remember to convert your measurement BEFORE you multiply! Obtain a meter stick. Measure the height of your lab partner in centimeters. Record your height and gender (male or female) in the class data table on the board in the C. lab. This data is needed for Section 1.7 Again using the meter stick, measure the length and width of the lab table in centimeters d. length cm width cm Area is calculated by multiplying the length x width. Remember to convert your measurement BEFORE you multiply! What is the area of the lab table in cm2? m2? 1.00 in Inches 10 Centimeters CHeke McN LUC 2.54 cm

Answer 1

1.3

Metric measurement (length)

1. In a small metric ruler how many centimeters are shown on the ruler_______, how many millimeters are shown _________?

Answer – There are 15 cm’s shown on the ruler, and 150 mm shown on the ruler.

Explanation- As per the metric system 1 cm= 10 mm so when there is 15 cm than the millimeter will be 15 X 10 = 150 mm.

2) Measure the length of index finger to the nearest mm, how long is your finger.

Answer- Index finger length is 7.2 cm in millimeter, it will be 7 X 10= 70+ 2= 72 mm.

3) The three wooden blocks were selected and their length , width, height measured in cm, their volume will be in cm and in mm

Answer:- The volume of the three blocks in cm ³ will be as in below table –

	Length (cm)	Breadth(cm)	Height(cm)	Volume= length X breadth X height in cm 3
Block 1	4	5	6	4 X 5 X 6= 120
Block 2	6	4	3	6 X 4 X 3= 72
Block 3	2	6	4	2 X 6 X 4= 48

a) Volume of block 1 in mm ³

Answer:-In block 1 the length in mm will be = 4 X 10= 40 mm

Breadth= 5 X 10= 50 mm

Height= 6 X 10=60 mm

So volume in mm ³ will be = 40 X 50 X 60= 120,000 mm ³

Because 1 cm= 10 mm so when converted volume becomes 120,000 mm ³.

b) Measuring the height of lab partner in centimeters_________?

Answer:- The height of the lab partner in meters is 2 m.

1 meter is equivalent to 100 cm so partner’s height in centimeters will be

2 X 100= 200 cm.

c)

	Gender	height
Rocky	Male	2 m

d) Using meter stick measure the length and width of lab table in centimeters.

Length = 200 cm.

Width= 100 cm.

Area of the table in centimeter ² will be= length X width = 200 X 100 = 20,000 cm ²

Area of the lab table in m ² will be

Length = 200 cm = 2 m.

As 100 cm= 1 m

200 cm will be equivalent to 2 m.

Width will be in meter = 100 cm = 1 m

So area of the table in meters will be= length X width = 2 X 1= 2 m ²

Note:- 1 cm= 10 mm

1 m=100 cm

1 m=1000 mm

1 km=1000 m

1 mm=1/10 cm

1 cm=1/100 m

1 m=1/1000 km

1 inch= 25.4 mm

1 m= 39.37 inches.