Medium Math Class 9 Level 7

In Heron's formula if sides are 20 cm 21 cm and 29 cm then what is the semiperimeter?

हीरोन सूत्र में भुजाएं 20 cm 21 cm और 29 cm हों तो अर्धपरिमाप कितना होगा?

A 30 cm / 30 cm B 35 cm / 35 cm C 40 cm / 40 cm D 70 cm / 70 cm
Show answer and explanation
Correct Answer

B. 35 cm / 35 cm

Explanation

s = (20 + 21 + 29)/2 = 70/2 = 35 cm.

s = (20 + 21 + 29)/2 = 70/2 = 35 cm।

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