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ikadub [295]
2 years ago
6

What is the area of this? Please help

Mathematics
2 answers:
Oxana [17]2 years ago
5 0

364 cm²

Step-by-step explanation:

Area of Triangle = 1/2 × B × H

  • where B is a base and H is height , given in the figure.

=> 1/2 × 20 × 14

=> 140 cm²

Area of Rectangle A = L × B

  • where L is Length and B is base of the rectangle.

=> 12 × 9

=> 108 cm²

Area of Rectangle B = L × B

  • To find the length and breadth we have to subtract ;

=> 12 - 5 = 7 -------- Length

=> 8 - 5 = 3 -------- Breadth

=> 7 × 3

=> 21

Area of Rectangle C - L × B

=> 19 × 5

= 95 cm²

Total area = Area of Triangle + Area of Rectangle A + Area of Rectangle B + Area of Rectangle C

=> ( 140 + 108 + 21 + 95 ) cm²

=> 364 cm²

Slav-nsk [51]2 years ago
3 0

Answer:

<u>364 cm²</u>

Step-by-step explanation:

Area of the figure :

  • Area (triangle) + Area (rectangle 1) + Area (rectangle 2) + Area (rectangle 3)
  • 1/2 x 20 x 14 + 12 x 9 + 7 x 3 + 19 x 5
  • 140 + 108 + 21 + 95
  • 248 + 21 + 95
  • 269 + 95
  • <u>364 cm²</u>

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A bike rental company charges $10 plus a charge per for the distance ridden. the total cost, t, can be represented by the equati
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Answer:

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Step-by-step explanation:

t=10+cm

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t-10=cm

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c=\frac{t-10}{m}

For example, if the total charge is $27.50 and the distance ridden is 250 mi, we can calculate the additional cost per mile, as such:

c=\frac{27.50-10}{250}

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1 year ago
A can is shaped like a cylinder 5.2 cm wide and 2.3 cm tall. find the volume of the nearest tenth. use 3.14 for pie.
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Answer: 48.8

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Prove algebraically that r = 10/2+2sinTheta is a parabola
Xelga [282]

Answer:

y =  -  \frac{ 1 }{10} {x}^{2}   +  \frac{5}{2}

Step-by-step explanation:

We want to prove algebraically that:

r =  \frac{10}{2 + 2 \sin \theta}

is a parabola.

We use the relations

{r}^{2}  =  {x}^{2}  +  {y}^{2}

and

y = r \sin \theta

Before we substitute, let us rewrite the equation to get:

r(2 + 2 \sin \theta) = 10

Or

r(1+  \sin \theta) = 5

Expand :

r+  r\sin \theta= 5

We now substitute to get:

\sqrt{ {x}^{2}  +  {y}^{2} }  + y = 5

This means that:

\sqrt{ {x}^{2}  +  {y}^{2} }=5 - y

Square:

{x}^{2}  +  {y}^{2} =(5 - y)^{2}

Expand:

{x}^{2}  +  {y}^{2} =25 - 10y +  {y}^{2}

{x}^{2}  =25 - 10y

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This is a parabola (0,2.5) and turns upside down.

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