!
Circumference*
Video*60*on*www.corbettmaths.com
Question*1:* Calculate*the*circumference*of*the*following*circles.**
* * Give*your*answers*to*1*decimal*place.*
(a)* * * *********(b)* * * (c)* * * (d)*
*
(e)* * * *********(f)* * * (g)* * * (h)*
Question*2:* Calculate*the*circumference*of*the*following*circles.*
* * Give*your*answers*to*1*decimal*place.*
(a)* * * *********(b)* * * (c)* * * (d)*
*
(e)* * * *********(f)* * * (g)* * * (h)*
Question*3:* Work*out*the*circumference*of*the*following*circles.**
**Give*your*answers*to*1*decimal*place.*
(a)
*A*circle*with*diameter*2cm*
(b)
*A*circle*with*diameter*14m*
(c)
*A*circle*with*radius*3cm*
Examples
Workout
© CORBETTMATHS 2016
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(d)
A circle with radius 0.15km
(e)
A circle with diameter 90 inches
(f) A circle with radius 5.7 yards
!
Circumference*
Video*60*on*www.corbettmaths.com
Question*4:* Calculate*the*circumference*of*the*following*circles.**
* * Give*your*answers*to*1*decimal*place.*
(a)* * * *********(b)* * * (c)* * * (d)*
*
(e)* * * *********(f)* * * (g)* * * (h)*
Question*5:* Calculate*the*circumference*of*the*following*circles.**
* * Leave*your*answer*in*terms*of*π*
(a)* * * *********(b)* * * (c)* * * (d)*
Question*6:* Work*out*the*circumference*of*the*following*circles.**
**Leave*your*answer*in*terms*of*π*
(a)
*A*circle*with*diameter*12cm*
(b)
*A*circle*with*diameter*52cm*
(c)
*A*circle*with*radius*10cm*
(d)
*A*circle*with*diameter*3cm*
(e)
*A*circle*with*radius*4km*
Question*7:* Find*the*size*of*the*diameter*for*each*of*the*following*circles.*
* * Give*your*answer*to*2*decimal*places.*
(a)* * * ****** * ****(b)* * * * *******(c)*
© CORBETTMATHS 2016
!
Circumference*
Video*60*on*www.corbettmaths.com
Question*8:* Find*the*size*of*the*radius*for*each*of*the*following*circles.*
* * Give*your*answer*to*2*decimal*places.*
*
(a)* * * ******* * ***(b)* * * * * (c)* * *
**
**
*
Question*1:* A*circular*table*top*has*a*diameter*of*85cm.*Work*out*the*circumference*of*the*
**table*top.*
*
Question*2:* A*pizza*has*a*circumference*of*50cm.*Work*out*the*diameter*of*the*pizza.*
Question*3:* A*bicycle*wheel*has*a*diameter*of*62cm.*The*wheel*makes*80*complete**
**revolutions.*
**How*far*has*the*bicycle*travelled?**
* * Give*your*answer*in*metres.*
*
Question*4:* Which*shape*has*the*greatest*perimeter?*
Apply
© CORBETTMATHS 2016
!
Circumference*
Video*60*on*www.corbettmaths.com
Question*5:* The*circle*and*the*square*have*the*same*perimeter.*
**Calculate*the*value*of*x.*
Question*6:* A*wheel*has*a*diameter*of*15cm.*
* * The*wheel*travels*50*metres.*
* * How*many*complete*revolutions*does*the*wheel*complete?*
*
Question*7:* Calculate*the*perimeter*of*the*pink*shape.*
Question*8:* Nicole*is*a*wedding*organiser.*
* * The*guests*are*to*sit*at*circular*tables*with*a*diameter*of*180cm.*
* * Each*guest*needs*70cm*around*the*circumference*of*the*ta ble.*
**There*are*18*tables*at*the*venue.*
* * A*total*of*145*guests*are*attending*the*wedding.*
* * Are*there*enough*tables?*
Question*9:* The*area*of*a*circle*is*40cm.*
* * Calculate*the*circumference*of*the*circle.*
Question*10:* The*circumference*of*a*circle*is*1m.*
**Calculate*the*area*of*the*circle.*
*
Answers
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