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2 years ago

I need help with number 4, find the area, thank you

Mathematics

2 answers:

nignag [31]2 years ago

7 0

Answer:

142.5

Step-by-step explanation:

19 x 15 = 285

285 / 2 = 142.5

formula for area of triangle is A = height (straight line from the base to the tip, not the length of one of the sides) x length of base / 2 ( A= hb/2)

Westkost [7]2 years ago

5 0

Answer:

142.5cm2 if it's correct I would appreciciate a brainliest

Step-by-step explanation:

15x19=285

285/2=142.5

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3 years ago

What is the area of rhombus ABCD? Enter your answer in the box. Do not round at any steps.

Mrac [35]

Answer:

Area of the rhombus ABCD = 16 square units

Step-by-step explanation:

Area of a rhombus = $\frac{1}{2}(\text{Diagonal 1})(\text{Diagonal 2})$

From the graph attached,

Diagonal 1 = Distance between the points A and C

Diagonal 2 = Distance between the points B and D

Length of a segment between (x₁, y₁) and (x₂, y₂) = $\sqrt{(x_2-x_1)^{2}+(y_2-y_1)^2 }$

Diagonal 1 (AC) = $\sqrt{(4-0)^2+(-1+1)^2}$ = 4 units

Diagonal 2(BD) = $\sqrt{(2-2)^2+(3+5)^2}$ = 8 units

Now area of the rhombus ABCD = $\frac{1}{2}(\text{AC})(\text{BD})$

= $\frac{1}{2}\times 4\times 8$

= 16 units²

Therefore, area of the given rhombus is 16 units².

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3 years ago

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Simora [160]

Answer:

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Step-by-step explanation:

Top right graph

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Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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