Green Bridge Learning Resource Nchekwa Maka Circumference And Area Of A Circle

Gbogbo ọrọ náà

The circumference is the distance around a circle and the area is the surface it encloses, both governed by the constant \(\pi\). Extend these to a slice of the circle and you can find an arc length and the area of a sector.

In this lesson you will calculate the circumference and area of a circle, and the arc length and area of a sector, by treating a sector as a simple fraction of the whole circle.

Ayẹwo Ẹkọ

Ekele diri gi maka imecha ihe karịrị na Circumference And Area Of A Circle. Ugbu a na ị na-enyochakwa isi echiche na echiche ndị dị mkpa, ọ bụ oge iji nwalee ihe ị ma. Ngwa a na-enye ụdị ajụjụ ọmụmụ dị iche iche emebere iji kwado nghọta gị wee nyere gị aka ịmata otú ị ghọtara ihe ndị a kụziri.

Ị ga-ahụ ngwakọta nke ụdị ajụjụ dị iche iche, gụnyere ajụjụ chọrọ ịhọrọ otu n’ime ọtụtụ azịza, ajụjụ chọrọ mkpirisi azịza, na ajụjụ ede ede. A na-arụpụta ajụjụ ọ bụla nke ọma iji nwalee akụkụ dị iche iche nke ihe ọmụma gị na nkà nke ịtụgharị uche.

Jiri akụkụ a nke nyocha ka ohere iji kụziere ihe ị matara banyere isiokwu ahụ ma chọpụta ebe ọ bụla ị nwere ike ịchọ ọmụmụ ihe ọzọ. Ekwela ka nsogbu ọ bụla ị na-eche ihu mee ka ị daa mba; kama, lee ha anya dị ka ohere maka ịzụlite onwe gị na imeziwanye.

The circumference of a circle is given by: A. pi r squared B. 2 pi r C. pi r D. 4 pi r Answer: B
The area of a circle is given by: A. 2 pi r B. pi d C. pi r squared D. pi r Answer: C
The area of a circle of radius 7 (pi = 3.142) is about: A. 44.0 B. 153.9 C. 21.99 D. 49 Answer: B
A sector with angle 72 degrees is what fraction of the circle? A. 1/4 B. 1/5 C. 1/6 D. 1/3 Answer: B
Arc length of a sector is the whole circumference multiplied by: A. theta/180 B. theta/360 C. 360/theta D. theta Answer: B