Meg goes swimming on a hot afternoon. When she comes out of the pool, her foot senses that the pavement is unbearably hot. Suppo
2 answers:
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Answer :
(1) The density of asphalt is,
(2) (a) Length, width and thickness of sheet in meter is, 0.35 m, 1.1 m and 0.015 m respectively.
(b) The volume and mass of slab is, 0.005775 m³ and 15.59 kg respectively.
Explanation :
<u>Part 1 :</u>
As we are given:
Mass of block = 90 kg
Volume of block =
Formula used :
Now put all the given values in this formula, we get:
Thus, the density of asphalt is,
<u>Part 2(a) :</u>
As we are given that:
Length of aluminium sheet = 35 cm
Width of aluminium sheet = 11 dm
Thickness of aluminium sheet = 15 mm
Now we have to convert these dimensions into meters.
Conversions used:
1 cm = 0.01 m
1 dm = 0.1 m
1 mm = 0.001 m
Length of aluminium sheet = 35 cm = 35 × 0.01 = 0.35 m
Width of aluminium sheet = 11 dm = 11 × 0.1 = 1.1 m
Thickness of aluminium sheet = 15 mm = 15 × 0.001 = 0.015 m
<u>Part 2(b) :</u>
First we have to calculate the volume of aluminium sheet.
Volume of aluminum sheet (cuboid) = Length × Width × Thickness
Volume of aluminum sheet (cuboid) = 0.35 m × 1.1 m × 0.015 m
Volume of aluminum sheet (cuboid) = 0.005775 m³
Now we have to calculate the mass of aluminium sheet.
Thus, the volume and mass of slab is, 0.005775 m³ and 15.59 kg respectively.