Question

Round off each of the answers correctly.

a.) What is the result of 8.7g + 15.43g + 19g, rounded to the appropriate decimal place?
b.) Calculate 4.32cm × 1.7cm and round the result to the correct number of decimal places.
c.) Find the difference between 853.2L and 627.443L, rounding your answer correctly.
d.) Divide 38.732m² by 0.421m and round the result to the suitable decimal place.
e.) Determine the volume of a rectangular prism with dimensions 5.40m × 3.21m × 1.871m, rounding the answer as needed.
f.) Calculate the total volume of 5.47m³, 11m³, and 87.300m³, rounding to the appropriate decimal places.

Answer 1

a) The result of 8.7g + 15.43g + 19g is 43.1g. (rounded to the nearest tenth)

b) The calculation of 4.32cm × 1.7cm is 7.34cm². (rounded to two decimal places)

c) The difference between 853.2L and 627.443L is 225.76L. (rounded to two decimal places)

d) The division of 38.732m² / 0.421m is 92.02m². (rounded to two decimal places)

e) The volume of a rectangular prism with dimensions 5.40m × 3.21m × 1.871m is 31.033m³. (rounded to three decimal places)

f) The total volume of 5.47m³, 11m³, and 87.300m³ is 103.77m³. (rounded to two decimal places)

Step-by-step explanation:

a) Addition:

Sum of the masses: 8.7g + 15.43g + 19g = 43.13g

Rounded to the nearest tenth: 43.1g

b) Multiplication:

Product of the lengths: 4.32cm × 1.7cm = 7.344cm²

Rounded to two decimal places: 7.34cm²

c) Subtraction:

Difference in volume: 853.2L - 627.443L = 225.757L

Rounded to two decimal places: 225.76L

d) Division:

Quotient of area and length: 38.732m² / 0.421m = 92.0237

Rounded to two decimal places: 92.02m²

e) Volume of a rectangular prism:

Volume = 5.40m × 3.21m × 1.871m = 31.03252m³

Rounded to three decimal places: 31.033m³

f) Total volume:

Sum of volumes: 5.47m³ + 11m³ + 87.300m³ = 103.77m³

Rounded to two decimal places: 103.77m³