Work backwards Quiz
10 questions · easy to harder · Geometry · score and step-by-step answers
How it works
- 10 questions, about 20 minutes (a timer counts down; you can hide it). Solve it right here: no sign-up.
- 5 questions have choices. For the others you type the answer: a number like 4, −2, 7/2 or 3.5, or for example x = 4, x = 2 or x = −3, (3, 5), 2x + 1. Use ^ for powers (x^2) and sqrt for √. Any form with the same value counts (7/2 = 3.5).
- One question at a time: Back, Next, Mark for review and the question list at the bottom. A calculator is on the screen.
- At the end: your percent and grade, every question right or wrong, why a wrong choice is wrong, and its step-by-step solution. Then practise the lesson with new questions.
Your answers and results are kept in this browser only, so you can close the page and come back.
1 Question 1
Rectangle area 48, length 8, find the width- A) w = 34
- B) w = 6
- C) w = 48
- D) w = 40
2 Question 2
Square area 49, find the sideType the answer.
3 Question 3
Square perimeter 36, find the side- A) s = 9
- B) s = 36
- C) s = 94
- D) s = 6
4 Question 4
Rectangle perimeter 30, length 9, find the widthType the answer.
5 Question 5
Triangle area 24, base 8, find the height- A) h = 4
- B) h = 24
- C) h = 3
- D) h = 6
6 Question 6
Circle circumference 31.4, find the radiusType the answer.
7 Question 7
Circle circumference 31.4, find the diameter- A) d = 5
- B) d = 100
- C) d = 10
- D) d = 31.4
8 Question 8
Circle area 50.24, find the radiusType the answer.
9 Question 9
Circle circumference 10π, find the radius- A) r = 10
- B) r = 5
- C) r = 52
10 Question 10
Rectangle area 22.5, length 5, find the widthType the answer.