Answer:
346.185 inches square
65.94 inches
230 mts
39-65x
Explanation:
Question 1:
diameter = 21 inches, Hence Radius = 10.5 inches
Area of circle = π r²
= 3.14*10.5*10.5
= 346.185 inches Square
Q2:
Circumference = 2πr
= 2*3.14*10.5
= 65.94 Inches
Question 3:
The scaled pyramid and the original pyramid will be similar to each other and hence the ratio of sides of them will be equal
Hence


Base = 230 meters
Question 4 :
13(4-5x-1)
Bringing like terms together in bracket
13(4-1-5x)
13(3-5x)
Applying distributive law
39-65x
Answer