Arc length, sector perimeter and rolling distance: check 1
Difficulty: ★★☆Info
Maths4U Original · Short practice
Find the arc length in cm for radius 8 cm and angle 1.25 radians.Enter one number or fraction. Round decimals to at least six decimal places when needed.
Arc length, sector perimeter and rolling distance: check 2
Difficulty: ★★☆Info
Maths4U Original · Short practice
A sector has arc length 12 cm and radius 5 cm. Find its perimeter in cm.Enter one number or fraction. Round decimals to at least six decimal places when needed.
Arc length, sector perimeter and rolling distance: check 3
Difficulty: ★★☆Info
Maths4U Original · Short practice
A circle has radius 7 cm. Its minor arc subtends 2 radians. The major arc has length \((14\pi-k)\) cm. Find \(k\).Enter one number or fraction. Round decimals to at least six decimal places when needed.
Arc length, sector perimeter and rolling distance: check 4
Difficulty: ★★☆Info
Maths4U Original · Short practice
For a fixed radius, doubling the angle of a sector does what to its arc length?Choose one answer.
Sector area and a fixed-perimeter constraint: check 1
Difficulty: ★★☆Info
Maths4U Original · Short practice
Find the sector area in square cm for \(r=6\) cm, \(\theta=1.5\) radians.Enter one number or fraction. Round decimals to at least six decimal places when needed.
Sector area and a fixed-perimeter constraint: check 2
Difficulty: ★★☆Info
Maths4U Original · Short practice
A sector of radius 4 cm has area 12 square cm. Find its angle in radians.Enter one number or fraction. Round decimals to at least six decimal places when needed.
Sector area and a fixed-perimeter constraint: check 3
Difficulty: ★★☆Info
Maths4U Original · Short practice
A sector has area 30 square cm and arc length 10 cm. Find its radius in cm.Enter one number or fraction. Round decimals to at least six decimal places when needed.
Sector area and a fixed-perimeter constraint: check 4
Difficulty: ★★☆Info
Maths4U Original · Short practice
At a fixed angle, tripling the radius multiplies the sector area by what factor?Choose one answer.
Arc length, sector perimeter and rolling distance: review variant 1
Difficulty: ★★☆Info
Maths4U Original · Short practice
A sector has radius 10 cm and angle 1.5 radians. Find its arc length in cm.Enter one number or fraction. Round decimals to at least six decimal places when needed.
Arc length, sector perimeter and rolling distance: review variant 2
Difficulty: ★★☆Info
Maths4U Original · Short practice
A sector has arc length 17 cm and radius 7 cm. Find its perimeter in cm.Enter one number or fraction. Round decimals to at least six decimal places when needed.
Arc length, sector perimeter and rolling distance: review variant 3
Difficulty: ★★☆Info
Maths4U Original · Short practice
A radius-8 cm circle has a minor arc angle 1.5 radians. Its major arc length is \((16\pi-k)\) cm. Find k.Enter one number or fraction. Round decimals to at least six decimal places when needed.
Arc length, sector perimeter and rolling distance: review variant 4
Difficulty: ★★☆Info
Maths4U Original · Short practice
A sector has angle \(0.4\) radians and arc length 7 cm. Its radius stays fixed and its angle is tripled. Find the new arc length in cm.Enter one number or fraction. Round decimals to at least six decimal places when needed.
Sector area and a fixed-perimeter constraint: review variant 1
Difficulty: ★★☆Info
Maths4U Original · Short practice
A sector has radius 5 cm and angle 1.6 radians. Find its area in square cm.Enter one number or fraction. Round decimals to at least six decimal places when needed.
Sector area and a fixed-perimeter constraint: review variant 2
Difficulty: ★★☆Info
Maths4U Original · Short practice
A radius-5 cm sector has area 10 square cm. Find its angle in radians.Enter one number or fraction. Round decimals to at least six decimal places when needed.
Sector area and a fixed-perimeter constraint: review variant 3
Difficulty: ★★☆Info
Maths4U Original · Short practice
A sector has area 28 square cm and arc length 7 cm. Find the radius in cm.Enter one number or fraction. Round decimals to at least six decimal places when needed.
Sector area and a fixed-perimeter constraint: review variant 4
Difficulty: ★★☆Info
Maths4U Original · Short practice
At a fixed angle, the radius is multiplied by 4. By what factor is the sector area multiplied?Enter one number or fraction. Round decimals to at least six decimal places when needed.