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3 years ago

Answer for 6,7 help pls

Mathematics

1 answer:

wel3 years ago

4 0

Answer:

b is true choice

6. is B

Step-by-step explanation:

the B is true choice

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A sphere is just enclosed inside a right circular cylinder. If the volume of the sphere is 140 cm3, find the volume of the gap b

alexgriva [62]

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Find Radius :
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$\text {Volume of a sphere =} \dfrac{4}{3} \pi r^3$

$\dfrac{4}{3} \pi r^3 = 140$

$\pi r^3 = 140 \times \dfrac{3}{4}$

$\pi r^3 = 105$

$r^3 = \dfrac{105}{ \pi}$

$r = 3.22 \ cm$

-----------------------------------------------------------
Find volume of the cylinder :
-----------------------------------------------------------
$\text {Volume of the cylinder = } \pi r^2h$

$\text {Volume of the cylinder = } \pi ((3.22)^2(3.22 \times 2)$

$\text {Volume of the cylinder = } 209.77 \ cm^3$

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Find volume of the gap :
-----------------------------------------------------------
$\text {Volume of gap = } 209.77 - 140$

$\text {Volume of gap = } 69.77 \ cm^3$

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$\bf \text {Answer : } 69.77 \cm^3$
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6 0

3 years ago

Mrs Brown and Mrs Jones make 4 dozen sandwiches in half an hour in Mrs Jones’ small kitchen. If they had 30 friends in to help,

Pepsi [2]

Answer:

1488 sandwiches in thirty minutes

Step-by-step explanation:

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2 years ago

Find the surface area 3 in 4 in 4 in 10 in PLZ HELP

Artyom0805 [142]

2(½ x 3 x 4) + 3(10 x 4)

=2(½ x 12) + 3(40)

=2(6) +120

=12+120

=132

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2 years ago

Helpppppppppppppppppppppppppppppppppppppp

notka56 [123]

A = L x W
L = W + 3

so equation
A = W (W + 3)
70 = W (W + 3)
or
W (W + 3) = 70

answer
D. last one
W (W + 3) = 70

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3 years ago

A cross section is the intersection of a

e-lub [12.9K]

Answer:

A cross section is the intersection of a figure in three-dimensional space with a plane. A cross section is the face you obtain by making a "slice" through a solid object. A cross section is two-dimensional. We see cross sections in everyday life.

3 0

2 years ago

Read 2 more answers