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bija089 [108]
3 years ago
14

6. A hemispherical dome of a building needs to be

Mathematics
1 answer:
babymother [125]3 years ago
3 0

Answer:

Step-by-step explanation:

circumference=17.6 m

2πr=17.6

2×22/7×r=17.6

44/7 r=17.6

r=17.6×7/44=0.4×7=2.8 m=280 cm

surface area=1/2(4 πr²)=2πr²=2×22/7×(280)²=2×22/7×280×280

=44×40×280

=492800 cm²

cost of painting=492800×5÷100=24640 Rs.

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In which number is the value represented by the digit 9 one-tenth the value represented by the digit 9 in 87,942
pav-90 [236]

Answer:

The answer is "100 place".

Step-by-step explanation:

In this question, the place value of the 9 is 100 because in the given digit "87,942" the 9 is coming in the 100 places.

In 87,942,  

8 is in 10,000 locations and its place value= 80,000.

7 is in 1,000 locations and its place value= 7,000.

9 is in the 100 locations and its place value= 900.

4 is in the 10 locations and its place value= 40.

2 is in the 1 location and its place value= 2.

Please find the attached file.

7 0
3 years ago
The polygons are similar find the value of x
natita [175]
Since the polys are similar, the following equation of ratios is true:

7/8 = x/3.  Cross multiplying produces 21=8x, and so x = 21/8 (answer)
6 0
4 years ago
What is the answer to 1/2+(-2/3)=
iren2701 [21]
<span>1/2+(-2/3)
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3/6 - 4/6
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6 0
3 years ago
Read 2 more answers
Need help with number 7
padilas [110]

Answer:

hi there!

the correct answer to this question is: 24 crackers

Step-by-step explanation:

you add (2/5) and (1/5) together to get (3/5)

then you multiply 3/5 by 40 to get 24

6 0
3 years ago
Find the value of x. Round to the nearest tenth
masha68 [24]

Answer: x= 42.3

Step-by-step explanation:

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5 0
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