Writem or cm for the lengths of the following objects:
The thickness of a book.
a.
6
Il
C
The height of your chair.
The screen of your video
game.
d. The length of a wall.
The thickness of your pencil box.
The length of your school belt.
5. The length of your shoe lace.
h. The length of your toothbrush.
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1
Answer:
The length, breadth and thickness of a rectangular sheet of metal are 4.234 m, 1.005 m, and 2.01 cm respectively. Give the area and volume of the sheet to correct significant figures.
Explanation:
A=2×(L×B+B×T+T×L)
∴A=2×(4.234×1.005+1.005×0.0201+0.0201×4.234)
∴A=2×(4.2552+0.0202+0.0851)
∴A=8.721m
2
∴A=8.721m
2
to correct significant digits
V=L×B×T
∴V=4.234×1.005×0.0201
∴V=0.0855m
3
to correct significant digits
Video Explanation
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