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3 years ago

Explain how u got the answer

Mathematics

1 answer:

andriy [413]3 years ago

6 0

The answer is explained in the picture

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Find the surface area of the composite solid.

Scilla [17]

Answer with Step-by-step explanation:

The given figure is a cuboid.

We know that surface area(S) of cuboid is given by:

S=2(lb+bh+hl)

Where l is the length, b is the breath and h is the height

Here, l=12 mm

b=6 mm

and h=(7+2) mm=9 mm

Surface Area= 2(12×6+6×9+9×12)

=2(72+54+108)

= 2×234

= 468 mm²

Hence, Correct option is:

C. 468 mm squared

4 0

3 years ago

Your family has a circular swimming pool. The radius of the pool is 9 feet and and its depth is 4 feet. What is the volume of th

-Dominant- [34]

Given

Your family has a circular swimming pool.

The radius of the pool is 9 feet and and its depth is 4 feet.

Find out the volume of the pool.

To proof

As depth is given in the question that means the shape of the swimming pool

is cylinder.

Formula

$Volume\ of\ cylinder = \pi r^{2}h$

where r = radius

h = height

now

radius of the pool is 9 feet and and its depth is 4 feet.

put all the values in the above equation

we get

$= \pi\times 9^{2}\times 4$

use 3.14 to approximate pi

$= 3.14\times 9\times9\times4$

we get

= 1017.4 ( approx )feet²

Hence proved

7 0

3 years ago

Read 2 more answers

The sum of the ages of a mother and her son is 63, six years ago the mothers age was twice as old as her son. How old is the mot

Ad libitum [116K]

Answer:

40 years old

Step-by-step explanation:

Let's imagine a+b=63

63-12=51 (since they were both 6 years younger)

A is double B

34+17=51

34/2=17

You need to add the 6 years back onto the mothers age - 34+6=40

40 years old

5 0

2 years ago

PLEASE HELP ME

lawyer [7]

18 multiplied with t

Product represents multiplication
The coefficient is 18
and to solve, t/18 is also correct

3 0

4 years ago

Read 2 more answers

An Olympic size swimming pool has a length of 50 m and a width of 25 m. Elizabeth wants to build a similar pool. If her pool has

11111nata11111 [884]

Answer:

The length of the pool is 12.5 m.

Step-by-step explanation:

Length of the Olympic size swimming pool, $L=50\textrm{ m}$

Width of the Olympic size swimming pool, $W=25\textrm{ m}$

Width of the similar pool, $w=6.25\textrm{ m}$ .

Let the length of the similar pool be $x$ m.

Now, if the two pools are similar, then their corresponding sides are proportional. This gives,

$\frac{x}{L}=\frac{w}{W}\\\\\frac{x}{50}=\frac{6.25}{25}\\\\x=\frac{6.25}{25}\times 50=6.25\times 2=12.5\textrm{ m}$

Therefore, the length of the similar pool is 12.5 m.

3 0

3 years ago