Tamil Nadu Board of Secondary EducationSSLC (English Medium) (5 to 8) Class 7

A wire of length 1320 cm is made into circular frames of radius 7 cm each. How many frames can be made? - Mathematics

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Sum

A wire of length 1320 cm is made into circular frames of radius 7 cm each. How many frames can be made?

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Solution

Length of the wire = 1320 cm

Radius of each circular frame = 7 cm

Circumference of the frame 2πr units = `2 xx 22/7 xx 7  "cm"`

= 2 × 22

= 44 cm

∴ Number of frames made = `"length of the wire"/"circumference of one frame"`

= `1320/44`

= 30

30 frames can be made.

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Chapter 2: Measurements - Exercise 2.1 [Page 28]

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Tamil Nadu Board Samacheer Kalvi Class 7th Mathematics Term 2 Answers Guide
Chapter 2 Measurements
Exercise 2.1 | Q 7 | Page 28

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