arrow
arrow
arrow
If the inradius of a triangle with perimeter 64 cm is 8 cm, then find the area of the triangle.
Question

If the inradius of a triangle with perimeter 64 cm is 8 cm, then find the area of the triangle.

A.

120 cm2\text{cm}^2

B.

256 ​cm2\text{cm}^2​​

C.

265 cm2\text{cm}^2​​

D.

146cm2\text{cm}^2

Correct option is B

Given:
- Perimeter of the triangle = 64 cm
- Inradius (r) = 8 cm

Formula Used:

Area of a triangle = Inradius × Semiperimeter
Semiperimeter = Perimeter / 2

Solution:

Semiperimeter = 64 / 2 = 32 cm
Area = Inradius × Semiperimeter = 8 × 32 = 256 cm²
Therefore, the area of the triangle is 256 cm².

Free Tests

Free
Must Attempt

CBT-1 Full Mock Test 1

languageIcon English
  • pdpQsnIcon100 Questions
  • pdpsheetsIcon100 Marks
  • timerIcon90 Mins
languageIcon English
Free
Must Attempt

RRB NTPC Graduate Level PYP (Held on 5 Jun 2025 S1)

languageIcon English
  • pdpQsnIcon100 Questions
  • pdpsheetsIcon100 Marks
  • timerIcon90 Mins
languageIcon English
Free
Must Attempt

CBT-1 General Awareness Section Test 1

languageIcon English
  • pdpQsnIcon40 Questions
  • pdpsheetsIcon30 Marks
  • timerIcon25 Mins
languageIcon English
test-prime-package

Access ‘RRB NTPC’ Mock Tests with

  • 60000+ Mocks and Previous Year Papers
  • Unlimited Re-Attempts
  • Personalised Report Card
  • 500% Refund on Final Selection
  • Largest Community
students-icon
354k+ students have already unlocked exclusive benefits with Test Prime!
Our Plans
Monthsup-arrow