The answer is (3). 5\12 1\4 = 37.5\150
1.5m= 150cm
37.5 + 50 = 87.5
87.5 x 12 = 750 750 \ 150 = 5
answer = 5\12
Answer:
8cm
Step-by-step explanation:
volume = πr²h
1056 = 22/7 (π) ×r²× 21
1056=66r²
r²= 16
r= 4
but diameter = 2r
D= 2×4
=8
Answer:
Step-by-step explanation:
<em>Look at the picture.</em>
We have the triangles 45° - 45° - 90°. The sides are in ratio 1 : 1 : √2
(<em>look at the second picture</em>).
Therefore we have the equations:
and
Solve:
<em>multiply both sides by √2</em>
<em>divide both sides by 2</em>
<em>multiply both sides by √2</em>
<em>divide both sides by 2</em>
The side length of square is
The area of a square:
Yes, your answers are correct.
The volume of a cone is given by V = 1/3πr²h. Since the diameter of the first cone is 4, the radius is 2; therefore the volume is
V = 1/3π(2²)(8) = 32π/3
We divide the volume of the sink, 2000π/3, by the volume of the cone:
2000π/3 ÷ 32π/3 = 2000π/3 × 3/32π = 6000π/96π = 62.5 ≈ 63.
The diameter of the second conical cup is 8, so the radius is 4. The volume then is:
V = 1/3π(4²)(8) = 128π/3
Dividing the volume of the sink, 2000π/3, by 128π/3:
2000π/3 ÷ 128π/3 = 2000π/3 × 3/128π = 6000π/384π = 15.625 ≈ 16