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jenyasd209 [6]
2 years ago
11

Plz asap surface area and volume of this shape

Mathematics
1 answer:
tino4ka555 [31]2 years ago
8 0
Volume = Cross-sectional area * length
C-S area = 1/2 * b * h
1/2(4)(15) = 30
length = 18
Volume = 30 * 18
= 540 mm^3

S' area = 2(C-S area) + 8(18) + 15(18) + 17 (18)
= 2(30) + 8(18) + 15(18) + 17(18)
= 60 + 144 + 270 + 306
= 780 mm^2 
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During the first hour of operation the farm stand owner sold 15% of the apples he had. On the second hour he sold 20% of the rem
zzz [600]

Answer:

38.25 kg

Step-by-step explanation:

Let the number of apples sold = x

Now, on the first hour he sold 15% of the apples i.e. he sold 0.15x kg of apples.

So, the remaining apples = x - 0.15x = 0.85x

Further, on the second hour he sold 20% of the remaining apples i.e. he sold 0.20 × 0.85x = 0.17x kg of apples.

Thus, the remaining apples = 0.85x - 0.17x = 0.68x

Then, on the third hour he sold 25% of the remaining apples i.e. he sold 0.25 × 0.68x = 0.17x kg of apples.

So, the remaining apples = 0.68x - 0.17x = 0.51x

Moreover, on the fourth hour he will sell 30% ( i.e. 5% more of 25% ) of the remaining apples i.e. he sold 0.30 × 0.51x = 0.153x kg of apples.

As, during the second hour, he sold 25.5 kg of apples.

Then, 0.17x = 25.5 i.e. x=\frac{25.5}{0.17} i.e. x = 250

Hence, during the fourth hour, he will sell 0.153x = 0.153 × 250 = 38.25 kg of apples.

7 0
3 years ago
Find the area A of polygon CDEFGH with the given vertices. C(0,5), D(2,5), E(2,3), F(3,2), G(-1,2), H(0,3)
enot [183]

Answer:

<em>The area of the polygon CDEFGH is 7</em>

Step-by-step explanation:

<u>Area of a Polygon</u>

The area of a polygon is generally calculated as the sum of the smaller areas that form its full shape, give each partial area has a known shape, like a square, rectangle, triangle, circle, etc.

The six points given in the question are plotted in the image below. They form a polygon whose area can be divided into two smaller shapes:

The area CDHE is a square of length side 2. Area of a square:

A1=L^2

The area HEFG is a trapezoid with bases lengths 4 and 2,  and height 1. Area of a trapezoid:

\displaystyle A2=\frac{b1+b2}{2}h

Calculate both areas:

A1=2^2=4

\displaystyle A2=\frac{2+4}{2}\cdot 1=3

Total Area=4+3=7

The area of the polygon CDEFGH is 7

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3 years ago
What is the quotient?
irakobra [83]
- 5 1/4 <span>÷ 2 3/4 =

= - 21/4 </span><span>÷ 11/4

= - 21/4 * 4/11

= - 21/11

= - 1 10/11
</span>
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Answer:

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Step-by-step explanation:

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Answer:

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