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RoseWind [281]
3 years ago
12

How do i find the area

Mathematics
1 answer:
RideAnS [48]3 years ago
4 0
Multiply the height and base of the triangle, then divide by 2. To find the area of the semi-circle, you must do this formula. 3.14 x Diameter × 1/2

Answer : 96 + 25.12 = 121.12cm
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Biologists tagged 139 fish in a lake on January 1, On February 1, they returned and collected a random sample
Bogdan [553]

Answer:

417 fish

Step-by-step explanation:

139/(10/30)=139*3=417

4 0
3 years ago
Simplify the expression. -5/8(-3/8-1/4) ​
prisoha [69]

Answer:

25/64

Step-by-step explanation:

To get this answer, first you need to use the distributive property:

(-3/8)(-5/8) - (1/4)(-5/8)

Next, multiply:

15/64 - (-5/32)

Change the negative signs into a positive sign:

15/64 + 5/32

Multiply 5/32 by 2 on both top and bottom:

15/64 + (5)(2)/(32)(2)

You will then get:

15/64 + 10/64

Now, add the numerators. You will get:

25/64

This is your answer. I hope it helped!

5 0
3 years ago
Hasan is painting a spherical model of a human cell for his science class. He uses 100π square inches of paint (in one coat) to
babymother [125]

Answer:

10 in

Step-by-step explanation:

So we want to consider the surface area of this sphere.

The formula for surface area of a sphere is A=4 \pi r^2.

So we have that the surface area is 100 \pi.

So I'm going to replace A in A=4 \pi r^2 with  100 \pi.

100\pi=4\pi r^2

Now our main objective here is to solve for r:

Divide both sides by 4 \pi:

\frac{100\pi}{4 \pi}=\frac{4\pi r^2}{4 \pi}

This gets us r^2 by itself:

25=r^2

What number squared gives you 25? If you don't know, just take the square root of both sides giving you:

\sqrt{25}=r

Now you can just put \sqrt{25} in your calculator.  You should get 5.

5 is the radius

The diameter is twice the radius.

So 2(5) is 10, so the diameter is 10 in.

4 0
2 years ago
Read 2 more answers
you have 12 cups of granola and 8 1/2 cups of peanuts to make trail mix. what is the greatest number of full batches of trail mi
GenaCL600 [577]
102 batches because all you have to do is multiply 12 and 8 1/2 I hope this helped
4 0
2 years ago
What is the equation of a line, in general form, with a point (-3, 0) and an undefined slope? x + 3 = 0
raketka [301]
x=-3

This is because when a line is vertical, then it has an undefined slope and so it must have a value for x only. This shows it must be x=-3.

6 0
2 years ago
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