Answer:
Solution given:
note=diameter=2*radius
1:
Area of circle =πr²=22/7*(21/2)²=<u>346.5cm²</u>
2:
radius (r)= 3 ½=7/2cm
Area of circle =πr²=22/7*(7/2)²=<u>38.5cm²</u>
3;
radius (r)=14/2=7cm
Area of circle =πr²=22/7*(7)²=<u>154cm²</u>
note:
π=3.14 or 22/7
<h3>i use 22/7 over here</h3>
Answer:
A
Step-by-step explanation:
because I remember this question in the quiz I had a while ago
Answer:
6n^4-10n^2+10n
Step-by-step explanation:
4 n^4+2n^4-3n^2-7n^2+9n+n
6n^4-10n^2+10n
Answer:
x = 1.87
Step-by-step explanation:
2x^2 - 5 + 1 = 3
2x^2 = 3 + 5 - 1
2x^2 = 7
x^2 = 7/2
x = √3.5
x = 1.87082.....
x = 1.87 ( 3 significant figures )
