Medium Math Class 9 Level 7

A rectangle has perimeter 126 cm and length 40 cm. What is its breadth?

आयत का परिमाप 126 cm और लंबाई 40 cm है तो चौड़ाई कितनी होगी?

A 20 cm / 20 cm B 21 cm / 21 cm C 22 cm / 22 cm D 23 cm / 23 cm
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Correct Answer

D. 23 cm / 23 cm

Explanation

2(l + b) = 126 so l + b = 63 and b = 63 - 40 = 23 cm.

2(l + b) = 126 इसलिए l + b = 63 और b = 63 - 40 = 23 cm।

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