Circles

What is the perimeter of this semi circle? (Use 3.14 = π and round to one decimal place) / Wat is die omtrek van die halfsirkel? (Gebruik 3.14 = π en rond ar tot een desimale plek)

• 18.5
• 11.3
• 20.3
• 22.6

What is the area of this semi circle? (Use 3.14 = π and round to one decimal place) / Wat is die oppervlakte van die sirkel? (Gebruik 3.14 = π en rond af tot een desimale plek)

• 12.6
• 20.6
• 25.1
• 33.1

Alex has trained his puppy, Popper, to jump through a ring. According to Alex's measurements and calculations, the ring has a diameter of 3.5 feet. What is the ring's circumference (use 3.14 for pi)? /

Alex het sy hondjie, Popper, geleer om deur 'n ring te spring. Volgens Alex se afmetings en berekeninge, het die ring 'n deursnee van 3.5 voet. Wat is die ring se omtrek (gebruik 3.14 vir pi)?

• 11.32 ft
• 12.25 ft
• 10.99 ft
• 8.75 ft

After taking part in a competition, Yahir received a bronze medal with a radius of 2.5 inches. What is the medal's diameter? / Yahir ontvang 'n brons medalje met 'n radius van 2.5 duim na hy aan 'n kompitisie deelgeneem het. Wat is die medalje se deursnee?

• 2.5 in
• 5 in
• 4 in
• 4.5 in

The Jones family wants to enclose their circular garden with a fence. To the nearest foot, what is the minimum length of fencing they need to buy? / Die Jones-familie wil hulle sirkelvormige tuin omhein. Wat is die minimum lengte heining wat hulle moet koop tot die naaste voet?

• 56.25 ft
• 246 ft
• 365 ft
• 393 ft

What is the radius of this circle? / Wat is die radius van hierdie sirkel?

• 20 in
• 10 in
• 40 in
• 10 in²

The radius of the circle is 9 meters.  What is the circle's circumference? / Die radius van die sirkel is 9 meter. Wat is die sirkel se omtrek?

• 9 meters
• 28.26 meters
• 56.52 meters
• 18 meters

What is the perimeter of the semi-circle? / Wat is die omtrek van die halfsirkel?

• 11 yd
• 17.27 yd
• 34.54 yd
• 28.27 yd

What is the area of a circle with a radius of 54 m? / Wat is die oppervlakte van die sirkel met 'n radius van 54 m?

• 339.12 m
• 169.56 m
• 84.78 m 

Find the circumference of a circle with a radius of 12.5 mm. / Vind die omtrek van 'n sirkel met 'n radius van 12.5 mm.

• 37.68mm
• 18.84mm
• 78.54mm
• none of the above