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2 years ago

Pls help I don't understand the question

Mathematics

1 answer:

barxatty [35]2 years ago

3 0

Answer:

Answers B I think.

Step-by-step explanation:

I assume t is time so the variable would equal the time it hit the floor

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5. A man is 6 times as old as his daughter. The man's son is 4 years older than his sister.

maxonik [38]

Answer:

82-10=72

72:6=12 daughter`s age

12+4=16 son`s age

16+12= 28

72-28=44 man`s age

Step-by-step explanation:

6 0

2 years ago

If 10 mm = 1 cm, how many millimeters are in 22 centimeters? Group of answer choices

san4es73 [151]

Answer:

220 millimeters

Step-by-step explanation:

If you take 22 cm * 10mm/1cm you get 220 mm

Please rate!

6 0

2 years ago

Divide: 782 ÷ 12 A) 65 R2 B) 65 C) 70 R5 D) 74

serious [3.7K]

It would be A i just did the math

5 0

3 years ago

Read 2 more answers

Find the volume and surface area of the composite figure. Give your answer in terms of π.

irakobra [83]

Answer:

V = 240π cm^3 , S= 168π cm^2

Step-by-step explanation:

The given figure is a combination of hemi-sphere and a cone

Volume:

For volume

r = 6 cm

h = 8 cm

$Volume\ of\ cone = \frac{1}{3}\pi r^2h\\= \frac{1}{3}\pi (6)^2*8\\=\frac{1}{3}\pi *36*8\\=\frac{288}{3}\pi\\=96\pi cm^3 \\\\Volume\ of\ hemisphere = \frac{2}{3}\pi r^3\\=\frac{2}{3}*\pi * (6)^3\\=\frac{2}{3}*\pi *216\\=\frac{432}{3}\\=144\pi cm^3 \\\\Total\ Volume= Volume\ of\ cone + Volume\ of\ hemisphere\\= 96\pi +144\pi \\=240\pi cm^3$

Surface Area:

For this particular figure we have to consider the lateral area of the cone shape and surface area of the hemisphere

We have to find the lateral height

$l = \sqrt{r^2+h^2}\\ l = \sqrt{(6)^2+(8)^2} \\l= \sqrt{36+64}\\ l = \sqrt{100}\\l = 10cm\\\\Surface\ area\ of\ cone = \pi rl\\= \pi (6)(10)\\=\pi *60\\=60 \pi\ cm^2\\\\Surface\ area\ of\ hemisphere = 2\pi r^2\\= 2 \pi * (6)\\= 2 \pi *36\\= 72 \pi\ cm^2\\\\Total\ surface\ Area = Surface\ area\ of\ cone + Surface\ area\ of \ hemisphere\\= 60 \pi + 72 \pi\\=132 \pi\ cm^2$

Hence the first option is correct ..

3 0

2 years ago

What is the five-number summary for this data set?

Natali [406]

Answer:

Step-by-step explanation:

4 0

2 years ago