This math topic focuses on the concept of calculating the area of a circle given its diameter. The practice problems, which are part of Geometry - Circle Area - Intro, require students to find the area without using a calculator and with approximation that π is slightly more than 3. It covers different levels of complexity, providing multiple choice answers to each problem.
Work on practice problems directly here, or download the printable pdf worksheet to practice offline.
Practice:
Circle from Diameter
Complete these online problems with 80% or 4 correct answers in a row. Results are immediate.
Find the area without using a calculator. Remember that π is just a bit more than 3.
Area of a Circle from Diameter Worksheet
| Math worksheet on 'Area of a Circle from Diameter (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 without using a calculator. Remember that π is just a bit more than 3. |
a
| 62.83 |
b
| 100 |
c
| 449.25 |
d
| 31.42 |
e
| 314.16 |
f
| 200 |
2
| Find the area without using a calculator. Remember that π is just a bit more than 3. |
a
| 56.55 |
b
| 81 |
c
| 414.69 |
d
| 28.27 |
e
| 254.47 |
f
| 376.99 |
3
| Find the area without using a calculator. Remember that π is just a bit more than 3. |
a
| 98 |
b
| 43.98 |
c
| 49 |
d
| 21.99 |
e
| 251.33 |
f
| 153.94 |
4
| Find the area without using a calculator. Remember that π is just a bit more than 3. |
a
| 64 |
b
| 345.58 |
c
| 128 |
d
| 25.13 |
e
| 201.06 |
f
| 50.27 |
5
| Find the area without using a calculator. Remember that π is just a bit more than 3. |
a
| 452.39 |
b
| 144 |
c
| 706.86 |
d
| 703.72 |
e
| 288 |
f
| 37.7 |
6
| Find the area without using a calculator. Remember that π is just a bit more than 3. |
a
| 380.13 |
b
| 242 |
c
| 69.12 |
d
| 612.61 |
e
| 527.79 |
f
| 490.09 |