Question:
Given the diameter of a wall clock is 21cm, find, to the nearest two decimal places:
a. The circumference of the clock and
b. The area of the clock
Answers:
a. Circumference of a circle = πd
= 3.142 x 21
=65,98cm
b. Area = πr^2
= r= d/2 = 21/2
=3.142 x 10.5^2
=3.142 x 110.25
=346,40cm^2
Given the diameter of a wall clock is 21cm, find, to the nearest two decimal places:
a. The circumference of the clock and
b. The area of the clock
Answers:
a. Circumference of a circle = πd
= 3.142 x 21
=65,98cm
b. Area = πr^2
= r= d/2 = 21/2
=3.142 x 10.5^2
=3.142 x 110.25
=346,40cm^2