Help please with this math

Step-by-step explanation: I will do 1, 2, 3, and 4 but its the same concept for all

1.

First, the formula for the area of a circle is πr² (r = radius)

To find radius, we have to divide the diameter by 2. Now lets plug in our numbers

πr²

3.14 · 17.5 ²

3.14 · 306.25

Area of 1. is 961.6 in²

2.

This is already the radius, so we simply plug in our numbers

πr²

3.14 · 2.5²

3.14 · 6.25

Area of 2. is 19.625 m²

3.

πr²

3.14 · 48²

3.14 · 2304

Area of 3. is 7234.56 mm²

4. Now, this one is a semicircle, so it may seem hard, but all we have to do is divide the area by 2

First, convert the diameter. So now lets plug it in

πr²

3.14 · 10²

3.14 · 100

314 / 2

Area of 4. is 157 in²

I hope this helps you :)

b. would be the answer : )

step-by-step explanation:

step 1: add -16x to both sides.

16x−4y+−16x=64+−16x  

−4y=−16x+64

step 2: divide both sides by -4.

−4y /-4 = -16x + 64/-4

answer:   y=4x−16

hope i'm right

the answer would be d

straight away you can eliminate a and c because not all books contain a scientific skill because some may be fiction. c is also wrong because it saids that the only way children can learn is through books which is incorrect.

b is also wrong because reading can be a scientific skill but not always, therefore it is wrong which leaves you with d, the correct answer since it said that it can children learn.

hope this ! : 3