Ganita Prakash

Heron's Formula

250+ practice questions available

Sample Practice Questions

5 questions shown — tap “Show Answer” to check yours.

Easy

The area of a triangle with sides 40 m, 32 m and 24 m is:

A384 m²

B768 m²

C192 m²

D480 m²

Easy

Can Heron's formula be applied to a triangle with sides 2 cm, 3 cm and 6 cm?

AYes, area = √(5.5 × 3.5 × 2.5 × -0.5)

BNo, because these sides cannot form a valid triangle

CYes, area = 0

DYes, but the area will be negative

Hard

A triangle has sides 20 cm, 21 cm and 29 cm. Its area is:

A210 cm²

B420 cm²

C105 cm²

D290 cm²

Easy

The semi-perimeter of an equilateral triangle with side 10 cm is:

A30 cm

B10 cm

C15 cm

D20 cm

Hard

Triangle 25, 30, 35 cm. Area:

A√(45×20×15×10)

B45×20×15×10

C√(90×20×15×10)

D√(45×25×30×35)

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