This math topic focuses on calculating the area of a circle from its radius. Multiple problems are provided for practice, requiring the learner to apply the formula A = πr², where "A" is the area and "r" is the radius of the circle. Answers to the problems are given as well, enabling self-correction. This topic is part of a broader unit on introductory circle area geometry.
Work on practice problems directly here, or download the printable pdf worksheet to practice offline.
Practice:
Circle from Radius (with hint and calculator)
Complete these online problems with 80% or 4 correct answers in a row. Results are immediate.
Find the area using the formula A = πr² where r is the radius
Area of a Circle from Radius (with hint and calculator) Worksheet
| Math worksheet on 'Area of a Circle from Radius (with hint and calculator) (Level 2)'. Part of a broader unit on 'Geometry - Circle Area - Intro' Learn online: app.mobius.academy/math/units/geometry_circles_area_intro/ |
1
| Find the area using the formula A = πr² where r is the radius |
a
| 288 |
b
| 37.7 |
c
| 452.39 |
d
| 571.77 |
e
| 753.98 |
f
| 75.4 |
2
| Find the area using the formula A = πr² where r is the radius |
a
| 254.47 |
b
| 28.27 |
c
| 376.99 |
d
| 162 |
e
| 81 |
f
| 452.39 |
3
| Find the area using the formula A = πr² where r is the radius |
a
| 62.83 |
b
| 530.93 |
c
| 314.16 |
d
| 100 |
e
| 31.42 |
f
| 449.25 |
4
| Find the area using the formula A = πr² where r is the radius |
a
| 242 |
b
| 69.12 |
c
| 527.79 |
d
| 380.13 |
e
| 452.39 |
f
| 34.56 |
5
| Find the area using the formula A = πr² where r is the radius |
a
| 128 |
b
| 282.74 |
c
| 25.13 |
d
| 201.06 |
e
| 64 |
f
| 50.27 |
6
| Find the area using the formula A = πr² where r is the radius |
a
| 153.94 |
b
| 98 |
c
| 21.99 |
d
| 311.02 |
e
| 43.98 |
f
| 254.47 |