Find the length of the wire required to go 15 times round a square field containing 69696 m2.
Correct answer: A. 15840 m
- A. 15840 m
- B. 16840 m
- C. 15820 m
- D. 15640 m
Explanation
The square's side is √69696 m² = 264 m. Its perimeter is 4 × 264 m = 1056 m, and 15 rounds require 15 × 1056 m = 15840 m of wire. The likely wrong choice is 16840 m, which comes from an arithmetic error after finding the perimeter.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Area and Volume
Area measures the surface enclosed by two-dimensional figures, while volume measures the space occupied by three-dimensional solids. Problems use formulas for rectangles, triangles, circles, prisms, cylinders, cones, spheres, and composite figures, including unit conversion and the distinction between surface area, lateral area, and volume.
Practise Geometry
222 free Geometry MCQs from Mathematics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Mathematics questions like this
Mathematics is on 76 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Area and Volume questions
The volumes of two cubes are in the ratio 27: 125, what shall be the ratio of their surface areas?
The areas of the two spheres are in the ratio 1: 4. The ratio of their volume is?
If a solid sphere of radius 10 cms is moulded into 8 spherical solid balls of equal radius, then surface area of each ball (in cm2) is________?
The edges of three iron cubes are 6cm; 8cm; 10cm respectively. A new cube was made by melting them. Find the edge of the new cube?
If the sides of two cubes are in the ratio 3: 1 the ratio of their total surface area is?
The edges of a cuboid are respectively 3cm, 4cm and 12 cm. Find the length of the diagonal of cuboid.