Question

express 2.5mm as a percent of 2.45cm​

Answer 1

Answer:

Question 12

Q6) Express the following as cm using decimals.

(a) 2 mm (b) 30 mm (c) 116 mm (d) 4 cm 2 mm (e) 162 mm

(f) 83 mm

Solution

Transcript

Solution 6:

(a) 10 mm = 1 cm

1mm = \frac{1}{10}cm

2 mm = \frac{1}{10}\times2=\frac{2}{10} cm = 0.2 cm

(b) 10 mm = 1 cm

1 mm = \frac{1}{10} cm

30 mm = \frac{1}{10}\times30=3.0 cm

(c) 10 mm = 1 cm

1 mm = \frac{1}{10} cm

116 mm = \frac{1}{10}\times116=\frac{116}{10}=11.6 cm

(d) 10 mm = 1 cm

1 mm = \frac{1}{10} cm

4 cm + 2 mm = 4+\frac{2}{10} cm = 4 + 0.2 = 4.2 cm

(e) 10 mm = 1 cm

1 mm = \frac{1}{10} cm

162 mm = \frac{1}{10}\times162=\frac{162}{10}=\ 16.2 cm

(f) 10 mm = 1 cm

1 mm = \frac{1}{10} cm

83 mm = \frac{1}{10}\times83=\frac{83}{10}=\ 8.3 cm

Answer 2

Answer:

2.45cm = 24.5mm

2.5mm as a percent of 24.5mm = 2.5/24.5 × 100

= 10.2%