Area of a circle: πr²

Data:
diameter: 21 cm
radius=diameter/2=21 cm/2=10.5 cm

area of this circle: π(10.5 cm)²=110.25π cm² (≈346.36 cm²)

Answer: area=110.25π cm²

4 0

3 years ago

Read 2 more answers

Use the distributive property to solve the equation -4(x+3)=8

algol [13]

Answer:

$x=-5$

Step-by-step explanation:

$-4(x+3)=8\\\\(-4)(x)+(-4)(3)=8\\\\-4x+(-12)=8\\\\-4x-12=8\\\\-4x-12+12=8+12\\\\-4x=20\\\\\frac{-4x}{-4}=\frac{20}{-4}\\\\x=-5$

7 0

2 years ago

Please help and ill give you brainliest and please don't just say something i lov youu and ill giv you points

ch4aika [34]

Answer:

1. 2(x+3)

2.x-3

3.2(x-3)

4.2-3x

5.x2+3

6.3-2

7.3+2

8.3x-2

9.3/x

10.x/3

Step-by-step explanation:

5 0

2 years ago

Given cos A=<br> 3<br> ―<br> 10<br> and tan A <0, find sin A.

QveST [7]

First we are going to start by subtracting 3-10 and that gives us 7 so then you divide 7 by 4”3 and you get 2.3

7 0

1 year ago