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RUDIKE [14]
3 years ago
12

What is the area of this figure?

Mathematics
1 answer:
n200080 [17]3 years ago
6 0

Answer:

243 cm^2 + 108 cm^2 = 351 cm^2

Step-by-step explanation:

So, we have a rectangle and two triangles, we know all the sides or angles.

Rectangle: with 9 cm lenght 15cm + 12 cm = 27 cm

Formula: A=wl -> A=9*27 = 243 cm^2

Trianlge: A=ab/2

Angle 90°

Side A 12 cm

Side B 18 cm - 9 cm = 9 cm

A=ab/2=12·9/2=54 cm times 2 (for the opposite side) = 108 cm^2 = 351 cm^2

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Andre builds a form for a new cement step in the shape of a rectangular prism. The form he builds is 40 and 1/2 inches long, 10
posledela

Answer:

3240 in^3

Step-by-step explanation:

Step one:

given data

The dimension of the form

Length 40 and 1/2 inches long,

Depth 10 inches deep,

The width and 8 inches high

Step two:

The amount of cement is equivalent to the volume of the form

V=L*W*H\\\\V=40.5*10*8\\\\V=3240 in^3

Hence the volume of cement is 3240 in^3

8 0
3 years ago
In the right triangle shown m angle A =45° and AB=12 how long is BC?
viva [34]

Answer:

8.48 = x

Step-by-step explanation:

sin45 = x / 12

12sin45 = x

8.48 = x

6 0
3 years ago
Read 2 more answers
Name the property that the statement illustrates.
o-na [289]
The answer is Transitive Property of Angle Congruence
8 0
3 years ago
Matt wrote the number three million, seven hundred two thousand, eight hundred fifty-six as 3,720,856
OLga [1]

Answer:

3,702,856

Step-by-step explanation:

add the three million and then look at the second number you need to add to it and it is seven hundred and two thousand so it should be 702 instead of 720.

5 0
4 years ago
a rectangle has horizontal sides of 3 (x-2)ft and vertical sides of 4x-7+(-2x) ft finde the value of x so that the rectangle has
Lynna [10]

Based on the given horizontal and vertical sides of a rectangle and its perimeter, the value of x in the expression is 6

<h3>Perimeter of rectangle</h3>

Perimeter of rectangle = 2(length + width)

  • Perimeter of the rectangle = 34 ft

  • Length of the rectangle = 3(x - 2) ft

= 3x - 6

  • Width of the rectangle = 4x - 7 + (-2x)

= 4x - 7 - 2x

= 2x - 7

Perimeter of rectangle = 2(length + width)

34 = 2{(3x - 6) + (2x - 7)}

34 = 2(3x - 6 + 2x - 7)

34 = 2(5x - 13)

34 = 10x - 26

34 + 26 = 10x

60 = 10x

x = 60/10

x = 6

Learn more about perimeter of rectangle:

brainly.com/question/24571594

#SPJ1

5 0
2 years ago
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