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2 years ago

SOLVE AND SHOW STEPS

Mathematics

1 answer:

stepladder [879]2 years ago

4 0

Answer:they got it

Step-by-step explanation:

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The net below can be folded to form a square pyramid.

topjm [15]

Surface area of the square pyramid = 217.8 in²

Solution:

Side length of the square = 9 in

Area of the square = side × side

= 9 in × 9 in

= 81 in²

Area of the square = 81 in²

Perimeter of the base = 4 × 9 in = 36 in

Slant height of the triangle = 7.6 in

Surface area of the square pyramid

$$=\frac{1}{2} \times \text{Perimeter} \times \text{Slant height} + \text{Base area}$

$$=\frac{1}{2}\times 36\times 7.6+81$

$$=136.8+81$

= 217.8 in²

Surface area of the square pyramid = 217.8 in²

6 0

3 years ago

Read 2 more answers

2-31. Write an equation and solve it to find the answer to the question below. Use the 5-D Process to help you write the equati

raketka [301]

r = 25+b

n = 3b

n+r+b=435

3b+25+b+b=435

5b+25=435

5b=210

b=42

r = 25+42 = 67

n = 3(42) = 126

6 0

3 years ago

Verify x + 1⁄2 is a factor of P(x)= x2<br> + x -2

kumpel [21]

Answer:

Put p(x)=0.

Step-by-step explanation:

2x-1=0 will give x=1/2. This means, If x=1/2 is given to the polynomial p(x), it will give a zero. P(1/2)=0.

8 0

2 years ago

Deisha saved d dollars last month. This month she saved $8 more than 3 times the amount she saved last month. She saved a total

DaniilM [7]

Answer:

Step-by-step explanation:

3 0

2 years ago

Chloe is painting on a stretched canvas that has an area of 108 square inches. The length of the canvas is 12 inches. The width

Stolb23 [73]

Answer: Width of canvas = 9 inches

Area left for painting after painting the border = 70 square inches.

Explanation :

Since we have given that

Area of painting = 108 square inches

Length of canvas = 12 inches

As we know that

$\text{Area of rectangle} = length\times breadth$

$108=12\times breadth\\\\\frac{108}{12}=breadth\\\\9=breadth$

So, breadth of canvas = 9 inches .

Now, Chloe paints a 1 inch wide blue border on the canvas.

$\text{So, remaining length left for painting after painting the border} = 9-1-1=9-2=7\text{ inches}$

$\text{ Remaining breadth left for painting after painting the border }= 12-1-1=12-2= 10\text{ inches}$

$\text{So , area of remaining portion }= length\times breadth \\\\ \text{ area of remaining portion }=7\times 10\\\\\text{ area of remaining portion }=70 \text{ square inches}$

Hence, remaining area = 70 square inches .

6 0

2 years ago