A floor is 75 m long and 12 m wide. If polishing costs 6 taka per m², what is the total cost?
Correct answer(s):
- 5400 taka
Subject
Mathematics
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Quizzes in Mathematics for Grade 8
Convert 66 m² into cm².
Correct answer(s):
- 660000 cm²
Using π = 3.14, find the volume of a sphere with radius 4 mm.
Correct answer(s):
- 267.95 mm³
Using π = 3.14, find the volume of a cone with radius 11 m and height 67 m.
Correct answer(s):
- 8485.33 m³
Using π = 3.14, find the curved surface area of a cylinder with radius 8 cm and height 61 cm.
Correct answer(s):
- 3064.64 cm²
Using π = 3.14, find the volume of a cylinder with radius 9 m and height 57 m.
Correct answer(s):
- 14497.38 m³
A cuboid measures 55 mm × 4 mm × 5 mm. What is its total surface area?
Correct answer(s):
- 1030 mm²
A cuboid has length 54 cm, breadth 8 cm, and height 4 cm. Find its volume.
Correct answer(s):
- 1728 cm³
A cube-shaped box has each edge 46 m. What is its volume?
Correct answer(s):
- 97336 m³
A cube has edge length 44 mm. What is its total surface area?
Correct answer(s):
- 11616 mm²
A triangle has base 42 cm and perpendicular height 12 cm. What is its area?
Correct answer(s):
- 252 cm²
A rectangular cardboard is 49 m by 11 m. A square of side 3 m is cut from it. What area remains?
Correct answer(s):
- 530 m²
A square tile has side length 19 mm. What is the area of the tile?
Correct answer(s):
- 361 mm²
A semicircular window has radius 41 cm. Using π = 3.14, what is its area?
Correct answer(s):
- 2639.17 cm²
A classroom notice board is 21 m long and 14 m wide. What is its perimeter?
Correct answer(s):
- 70 m
Using π = 3.14, find the circumference of a circle with radius 38 m.
Correct answer(s):
- 238.64 m
The area of a rectangle is 468 cm² and its breadth is 13 cm. What is the length?
Correct answer(s):
- 36 cm
Using π = 22/7, find the area of a circle with radius 35 mm.
Correct answer(s):
- 3850 mm²
A rectangular garden is 17 mm long and 9 mm wide. What is its area?
Correct answer(s):
- 153 mm²
Which formulae correctly give area of plane figures? Select all correct answers.
Correct answer(s):
- Triangle: 1/2 × base × height
- Rectangle: length × breadth