Dr. J's Maths.com
Where the techniques of Maths
are explained in simple terms.
Where the techniques of Maths
are explained in simple terms.
Measurement - perimeter and area.
Test Yourself 1.
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- Index
| Perimeter | 1. 
Write an algebraic expression (in the simplest form) to describe the perimeter of the above figure. Answer.Perimeter is 20x + 12. |
| 2. | |
3. 
Calculate the perimeter of the shape shown in the above diagram (to 3 significant figures). |
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| 4. | |
| 5. A entrance to a tunnel is constructed with two concentric semicircles. The cross-section and the main measurements are shown in the following diagram.
Calculate the perimeter of the tunnel outline to the nearest m2. Answer.63 m2. |
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| Area | 6. A string of length 40 cm is arranged so as to form a circle with the ends of the string meeting and there being no overlap.
What is the area of the circle so formed |
| 7. Find the area of the annulus shown below to the nearest m2.
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| 8.
Write an algebraic expression (in the simplest form) to describe the area of the above figure. Answer.Area is 21x2 + 24x. |
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| 9. (i) Determine the dimensions of the rectangle shown below.
Answer.(i) x = 16. (ii) Area = 8 × 56 = 448. |
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| Conversions. | The area was calculated to be 1350 mm2. What is this area in cm2? |
| Composite shapes. | |
