Answer:
Step-by-step explanation:
Big circle:
R = radius = diameter ÷2 = 42 ÷ 2 = 21 cm
Area of big circle= πR²
Small circle:
Diameter of small circle = radius of big circle = 21 cm
r = 21/2 = 10.5 cm
Area of small circle = πr²
Area of shaded region = area of big circle - area of small circle
= 1386 - 346.5
= 1039.5 cm²
Answer:
12/4=3 or 12/3=4
Step-by-step explanation:
because multiplication is the opposite of division
the first one
jjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj
Answer:
Because every Y doesn't have 2 different X
Step-by-step explanation:
Hello there.
<span>You have been asked to build a scale model of your school out of toothpicks. imagine your school is 30ft tall. your scale is 1ft:26cm
Answer: Since you have one part of the input data in the ratio , you can insert it.
At the moment it would look like this 30ft : ? . To get from 1 to 30 you have to multiply by 30 therefore you should do that to the other side too.
26cm x 30 = 780.
Therefore the scale is now 30ft : 780 cm.
Hope This Helps You!
Good Luck Studying :)</span>
