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4 years ago

Surface Area of this prism?

Mathematics

1 answer:

bearhunter [10]4 years ago

6 0

ANSWER: Length times width time height; (4*7*12=336in^2)

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5(4-1)-23 exponent is 2 +1

Thepotemich [5.8K]

Answer:

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Step-by-step explanation:

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3 years ago

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Bank robber holds up a bank and speeds off at 71 mph. Police start chasing him 10 minutes later going 78 mph. How long will it t

alexira [117]

Answer:

It takes 1.68 hours to catch up to them.

Step-by-step explanation:

The speed of robber = 71 mph

The speed of police = 78 mph

The police start 10 minutes later

by that time robber would have travelled

$distance = \frac{speed}{time}$

10 minutes =0.166667 hours

then the distance = 11.8 mph

Let them meet at distance x from the bank.

time taken by police to reach x , time = $\frac{ x}{78}$ ----------------------(1)

time taken by robber in the same time = $\frac{x-11.8}{71}$ ---------------(2)

Equating (1) and (2)

$\frac{x}{78} =\frac{ x-11.8}{71}$

$71 x = 78(x - 11.8)$

71x =78x - 920.4

920.4 = 78x - 71x

920.4 = 7x

x = 131.48

The distance where they catch up with the robber from the bank is 131.48 miles

speed of police = 78 mph

distance = 131.48 miles

time they catch up = $\frac{131.48}{78}$

= 1.68 hours

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3 years ago

A solid circular cylinder has a base radius 5 cm and a height 12.5 cm. Find the approximate increase in the surface area of the

Olin [163]

Answer:

19.72 cm²

Step-by-step explanation:

A solid circular cylinder has a base radius 5 cm and a height 12.5 cm.

The volume of cylinder is given by :

$V=\pi r^2 h\\\\=3.14\times (5)^2\times 12.5\\\\=981.25\ cm^2$

When r = 5.05, new volum becomes,

$V=\pi r^2 h\\\\=3.14\times (5.05)^2\times 12.5\\\\=1000.97\ cm^2$

Increase in area = 1000.97 - 981.25 = 19.72 cm²

So, the increase in surface area of the cylinder is equal to 19.72 cm².

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3 years ago

Hey, this question is really simple but im a little tired and can't seem to get it.. 25 points and brainliest- please help out.

Nimfa-mama [501]

Answer:1/3

Step-by-step explanation:

It’s 4/12 so divide both numbers by 4 is 1/3

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3 years ago

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Find the area of the figure.

Sholpan [36]

Answer:

132cm2

Step-by-step explanation:

1. Split the figure into a trapezoid and a rectangle.

2. Find the area of the trapezoid, which is 104cm2.

3. Find the area of the rectangle, which is 28cm2.

4. Add the areas to get 132cm2.

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3 years ago