A block of wood has a mass of 180 grams. It is 10cm long 6cm wide and 4cm thick. What is its volume and density?
1 answer:
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Answer:
16.6 in
Step-by-step explanation:
The volume (V) of a pyramid is
V = area of base × h
where h is the perpendicular height and area of base = 14² = 196
here V = 980, so
× 196h = 980 ( multiply both sides by 3 )
196h = 2940 ( divide both sides by 196 )
h = 15
Consider the right triangle formed by the height h from the vertex to the midpoint of the base and the slant height (s) ← the hypotenuse
Using Pythagoras' identity in the right triangle
s² = 15² + 7² = 225 + 49 = 274 ( take the square root of both sides )
s = ≈ 16.6
Answer:
Therefore the Perimeter of the room is 94 ft.
Step-by-step explanation:
Given:
Where ,
P = Perimeter
l = Length = 26 ft
w = Width = 21 ft
To Find:
Perimeter of the room = ?
Solution:
Perimeter of Rectangle is given as
Substituting 'l' and 'w' we get
Therefore the Perimeter of the room is 94 ft.
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➷ The formula for circumference is
1)
Divide both sides by
d = 9.99 (consider this to be 10)
Half this to find the radius
10/2 = 5
It would be figure B.
2)
Divide both sides by :
d = 11.99 (consider this to be 12)
Divide by 2 to find the radius:
12/2 = 6
It would be figure C.
3) area =
r^2 = 48.97515909
r = 6.998 (consider this to be 7)
It would be figure D
4)
r^2 = 35.98174
r = 5.998 (consider this to be 6)
It would be figure C.
5) radius = diameter / 2
radius = 3
It would be option C
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