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3 years ago

What ABOUT THIS ONE AND HOW IS EVERY ONE DURING LOCKDOWN

Mathematics

2 answers:

Valentin [98]3 years ago

7 0

Answer:

835.24 cm²

Step-by-step explanation:

2(pi × r²) + ( 2 × pi × r × h)

2(3.14 × 7²) + (2 × 3.14 × 7 × 12)

835.24 cm²

Liono4ka [1.6K]3 years ago

4 0

Area of cyclinder
A = 2pir^2 + 2pirh
=> 2pi(7)^ + 2pi(7)(12)
=> 835.66 cm^2

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Determine whether the ratios 35 feet every 15 seconds and 7 feet every 2 seconds are equivalent.

murzikaleks [220]

Answer:

Step-by-step explanation:

Find the rate of those two statements:

28 ÷ 16 = 1.75

1.75 ft per seconds

7 ÷ 4 = 1.75

1.75 ft per seconds

Two statements have the same rate, therefore 28 feet every 16 seconds and 7 feet every 4 seconds are equivalent

5 0

1 year ago

A guy-wire is attached to a pole for support. If the angle of elevation to the pole is 67° and the wire is attached to the groun

Andrews [41]

The angle = 67<span>° and the pole is a right-angled triangle. Therefore the distance required to find (say "x) is the angle opposite the right-angle. The following equation needs to be solved:

cos 67 = 137 / x

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3 0

3 years ago

Factor 200t+8t^3-80t^2

valina [46]

Answer:

8t(t - 5)^2

Step-by-step explanation:

I would immediately rearrange these terms in descending order by powers of t:

8t^3 - 80t^2 + 200t

Then I'd factor out 8t:

8t(t^2 - 10 t + 25).

Finally, I'd factor the quadratic t^2 - 10 t + 25:

(t - 5)^2

and so 200t+8t^3-80t^2 in factored form is 8t(t - 5)^2.

6 0

3 years ago

Read 2 more answers

What percent of 50 is 15? A. 0.3% B. 7.5% C. 30% D. 35%

Harrizon [31]

Answer

Step-by-step explanation

6 0

3 years ago

Read 2 more answers

1. Find the sum of the measures of the interior angles of a convex 11-gon.

OleMash [197]

Answer:

The measure of the sum of interior angles of a 11-gon is $1620^{o}$ .

Each interior angle is approximately $147.273^{o}$ .

Step-by-step explanation:

A convex polygon has the measure of each interior angles to be less than $180^{o}$ .

But,

sum of interior angles of polygon = (n - 2) x $180^{o}$

where n is the number of sides of the polygon.

For a convex 11-gon, we have;

sum of angles of a 11-gon = (11 - 2) x $180^{o}$

= 9 x $180^{o}$

= $1620^{o}$

Sum of angles of a 11-gon = $1620^{o}$

To check: convex polygons' interior angles are less than $180^{o}$ .

so that,

each interior angle of 11-gon = $\frac{1620}{11}$

= $147.273^{o}$

3 0

3 years ago