alleryStart learning →A rectangular field is 24 m long and 15 m wide. What is its perimeter?
- 360 m
- 60 m
- 39 m
- 78 m
Show answer and solution
Correct answer: D. 78 m
Perimeter is twice the sum of length and width, so 2 x (24 + 15) = 78 m.
Olympiad (Class 7) Perimeter and area — practice questions
Explore 57 free Perimeter and area questions in Olympiad (Class 7) Mathematics. Open each question or exercise to read its content, reference answers and available explanation.
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Showing questions 1–30 of 57.
A rectangular field is 24 m long and 15 m wide. What is its perimeter?Read the answer and worked solution →A square park has a side of 18 m. How much fence is needed to go once round it?Read the answer and worked solution →A square has an area of 81 cm2. What is its perimeter?Read the answer and worked solution →What is the area of a rectangle that measures 12 m by 7 m?Read the answer and worked solution →Which one is the standard unit of area in the International System of Units?Read the answer and worked solution →How many square centimetres make one square metre?Read the answer and worked solution →A room 5 m by 4 m is paved with square tiles of side 50 cm. How many tiles are needed?Read the answer and worked solution →A parallelogram has a base of 10 cm and a height of 6 cm. What is its area?Read the answer and worked solution →The adjacent sides of a parallelogram are 9 cm and 5 cm. What is its perimeter?Read the answer and worked solution →A triangle has an area of 40 cm2 and a base of 10 cm. What is its height?Read the answer and worked solution →A circle has radius 7 cm. Taking pi as 22/7, what is its circumference?Read the answer and worked solution →A wheel has diameter 70 cm. How far does it roll in one full turn? Use pi = 22/7.Read the answer and worked solution →The radius of a circle is doubled. Its area becomes how many times the old area?Read the answer and worked solution →The radius of a circle is halved. Its circumference becomes what part of the old one?Read the answer and worked solution →The length of a rectangle is doubled while its width stays the same. What happens to its area?Read the answer and worked solution →Both the length and the width of a rectangle are doubled. What happens to its perimeter?Read the answer and worked solution →A rectangle has area 96 cm2 and length 12 cm. What is its perimeter?Read the answer and worked solution →A rectangle is 12 cm by 8 cm. A square has the same perimeter. By how much is the square's area larger?Read the answer and worked solution →A garden is 30 m by 20 m. It is fenced all round except a 2 m gate. How long is the fence?Read the answer and worked solution →A square field of side 25 m is fenced at Rs 12 per metre. What is the total cost?Read the answer and worked solution →A lawn 20 m by 10 m has a 1 m wide path built all around outside it. What is the path's area?Read the answer and worked solution →A field 30 m by 20 m has a 2 m wide path running inside along its whole boundary. What is the path's area?Read the answer and worked solution →An equilateral triangle has a perimeter of 45 cm. What is the length of each side?Read the answer and worked solution →What is the perimeter of a regular hexagon with side 6 cm?Read the answer and worked solution →A regular polygon has side 8 cm and perimeter 56 cm. How many sides does it have?Read the answer and worked solution →A triangle has base 20 cm and height 12 cm. A rectangle of width 8 cm has equal area. What is its length?Read the answer and worked solution →A diagonal cuts a parallelogram of area 54 cm2 into two triangles. What is the area of each triangle?Read the answer and worked solution →A parallelogram has sides 10 cm and 6 cm. The height on the 10 cm side is 3 cm. What is the height on the 6 cm side?Read the answer and worked solution →Which of these parallelograms has all four sides equal in length?Read the answer and worked solution →A parallelogram has perimeter 52 cm and one side 16 cm. What is the length of the adjacent side?Read the answer and worked solution →
Worked practice questions
A square park has a side of 18 m. How much fence is needed to go once round it?
- 72 m
- 36 m
- 324 m
- 54 m
Show answer and solution
Correct answer: A. 72 m
A square has four equal sides, so the fence is 4 x 18 = 72 m.
A square has an area of 81 cm2. What is its perimeter?
- 27 cm
- 81 cm
- 18 cm
- 36 cm
Show answer and solution
Correct answer: D. 36 cm
Side is 9 cm because 9 x 9 = 81, so the perimeter is 4 x 9 = 36 cm.
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