A semicircular window has radius 40 mm. Using π = 3.14, what is its area?
Correct answer(s):
- 2512 mm²
Subject
Mathematics
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Quizzes in Mathematics for Grade 8
Using π = 3.14, find the circumference of a circle with radius 37 cm.
Correct answer(s):
- 232.36 cm
Using π = 3.14, find the area of a circle with radius 34 m.
Correct answer(s):
- 3629.84 m²
A rhombus has diagonals 58 cm and 10 cm. Find its area.
Correct answer(s):
- 290 cm²
Which conversions are correct? Select all correct answers.
Correct answer(s):
- 1 m³ = 1,000,000 cm³
- 1 m² = 10,000 cm²
The parallel sides of a trapezium are 29 mm and 36 mm, and the height is 9 mm. What is its area?
Correct answer(s):
- 292.5 mm²
A floor is 74 m long and 11 m wide. If polishing costs 5 taka per m², what is the total cost?
Correct answer(s):
- 4070 taka
A parallelogram has base 45 cm and perpendicular height 9 cm. Find its area.
Correct answer(s):
- 405 cm²
Convert 64 m³ into cm³.
Correct answer(s):
- 64000000 cm³
A triangle has base 38 m and perpendicular height 10 m. What is its area?
Correct answer(s):
- 190 m²
Using π = 3.14, find the volume of a sphere with radius 3 m.
Correct answer(s):
- 113.04 m³
A square tile has side length 17 cm. What is the area of the tile?
Correct answer(s):
- 289 cm²
Using π = 3.14, find the volume of a cone with radius 10 cm and height 66 cm.
Correct answer(s):
- 6908 cm³
A classroom notice board is 19 mm long and 12 mm wide. What is its perimeter?
Correct answer(s):
- 62 mm
Using π = 22/7, find the curved surface area of a cylinder with radius 7 mm and height 60 mm.
Correct answer(s):
- 2640 mm²
The area of a rectangle is 330 m² and its breadth is 11 m. What is the length?
Correct answer(s):
- 30 m
A rhombus has diagonals 56 mm and 8 mm. Find its area.
Correct answer(s):
- 224 mm²
A cuboid has length 51 cm, breadth 5 cm, and height 10 cm. Find its volume.
Correct answer(s):
- 2550 cm³
The parallel sides of a trapezium are 28 m and 34 m, and the height is 8 m. What is its area?
Correct answer(s):
- 248 m²
A cube-shaped box has each edge 43 m. What is its volume?
Correct answer(s):
- 79507 m³