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4 years ago

I NEED HELP PLEASE!!!!

Mathematics

2 answers:

antoniya [11.8K]4 years ago

7 0

B. 105
i believe it should be that

Anna007 [38]4 years ago

6 0

Answer:

Step-by-step explanation:

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QUESTION: Josephine put a frame round his picture which measured 36 cm by 34 cm. A margin 4cm wide was left all the way round. W

Mandarinka [93]

36x34= 1224cm²
(36-4)x(34-4)= 32x30= 960cm²

Area of frame= 1224
Area of picture inside frame= 960
So border = 1224-960= 264

ANSWER = 264cm²

5 0

3 years ago

Alex tried to find the lateral area of the pyramid. FIND HIS ERROR AND CORRECT IT.

sweet-ann [11.9K]

Answer:

His error is multiplying by 4 sides as he thought it was total surface not lateral surface area- the final answer is 12

Step-by-step explanation:

He should have multiplied it by 3, because the 3 sides- not including the base- is what lateral surface area is. He originally did total surface area not lateral surface area so each sides area is 4m squared then you just multiply it by 3 and its 12

5 0

3 years ago

Read 2 more answers

The square root of 54 is what??

Vikentia [17]

$\sqrt{54}$ = 7.348469228

this is irrational, because it cannot be written in the form $\frac{a}{b}$
2. Irrational

6 0

4 years ago

A $750 televisión is on sale for 15% off.what is the total discount

yaroslaw [1]

We need to find 15% of 750.

15% * 750.

15/100 * 750

11250/100

112.5

So that means the sale is 112.5 dollars

3 0

3 years ago

Which expressions represent the area of the entire shaded region, including the light and dark shading? select three options. 12

Alex Ar [27]

A triangle is a polygon. The total area of the figure can be represented by 12a, (6a+b), and 2b cm².

<h3>What is a triangle?</h3>

A triangle is a polygon with 3 sides and 3 vertices.

Since the area of a single triangle is a cm², and the shape is formed of 12 triangles, therefore, the area of the 12 triangles will be equal to,

$\text{Area of the complete figure} = 12 \times a = 12a\rm \ cm^2$

Given that the area of the complete dark portion is b cm², therefore, the area of the 6 triangles with a cm² of area each, and the black portion can be written as,

$\text{Area of the complete figure} = (6 \times a)+b = (6a+b)\rm \ cm^2$

As the dark portion also consists of 6 triangles with an area of a cm² each and the total sum of this dark area is b cm². Also, the light portion consists of 6 triangles with an area of a cm². Therefore, the total area can be written as,

$\text{Total area} = 6a+6a = b+b = 2b\rm\ cm^2$

Thus, the total area of the figure can be represented by 12a, (6a+b), and 2b cm².

Learn more about Triangles:

brainly.com/question/2773823

6 0

2 years ago