3 years ago

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.

You might be interested in

How many servings of popcorn are in 5 1/2 cups of each person receives 3/4 cup of popcorn?

Reil [10]

Answer:

7.3333, so if you round down, 7.

Step-by-step explanation:

5 1/2 divided by 3/4 is 7.3333

6 0

3 years ago

Sam spends $13.50 on baseball cards. The tax is 6%. What is his total cost?

Alexandra [31]

Answer:

13.50+0.81= $14.31

Step-by-step explanation:

Hope this helps!

5 0

3 years ago

What is the probability that 1 or 2 are rolled on a number cube with sides numbered 1, 2, 3, 4,

choli [55]

Answer: $\frac{1}{3}$

Step-by-step explanation:

total sides = 6

p (rolling a 1) = $\frac{1}{6}$

p (rolling a 2) = $\frac{1}{6\\}$

Note:

or - add

and - multiply

∴ $\frac{1}{6} +\frac{1}{6} = \frac{2}{6}$

∴ $\frac{2}{6} = \frac{1}{3}$

hence, p (rolling a 1 or 2) = $\frac{1}{3}$

4 0

3 years ago

In a group of 90 seventh

Firdavs [7]

90 x .80= 72. 72 Students like hot choco, therefore 8 do no like hot choco

5 0

3 years ago

Read 2 more answers

A musician purchases a pair of cube-shaped speakers that are 9 inches across. If the face of the speaker takes up of the total v

netineya [11]

Answer:

Assuming "the speaker takes up 1/6 of the internal volume"

volume is 9³ in³

you want the remaining volume, which is 5/6 of the total

(5/6)9³ = 607.5 in³

double that if you want the remaining volume for BOTH speakers....

3 0

3 years ago