find the radius and circumference of a circle whose area is 154 cm square
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3
Answer:
radius is 49 cm. circumferance is 77 cm
Step-by-step explanation:
pi*r^2 = 154
r^2 = 154*7 / 22 = 49
r = 49
circumferance = pi*r / 2 = 22*49 / 7*2 = 77 cm
Answered by
6
Given:
find the radius and circumference of a circle whose area is 154 cm square
Solution:
➞ Circumference of Circle = 2πr
➞ 154 = 2 × 22/7 × Radius
➞ 154 ÷ 2 = 22/7 × Radius
➞ 77 = 22/7 × Radius
➞ 77 × 7 = 22 × Radius
➞ 539 = 22 × Radius
➞ 539 ÷ 22 = Radius
➞ 24.5 = Radius
It was given that diameter of the Circle = Side of the Square
➞ Diameter of Circle = 2 × Radius
➞ Diameter o➞ = 49 × 49
➞ Area of Square = 2401cm²
Therefore, Area 2401cm²
Therefore, Area of Square = 2401cm²
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