Question

Find the base of isosceles triangle whose area is 60sqcm and length of equal sides is 13cm

Answer 1

Step-by-step explanation:

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Isosceles triangle

Solve for base

b≈10cm

or

24cm

a Side

13

cm

A Area

60

cm²

Using the formulas

A=bhb

2

hb=a2﹣b2

4

There are 2 solutions forb

b=22A

a2+a4﹣4A2=2·2·60

132+134﹣4·602≈10cm

b=22A

a2﹣a4﹣4A2=2·2·60

132﹣134﹣4·602=24cm

Answer 2

Answer:

Base of an Isosceles triangle=9.23 cm

Step-by-step explanation:

Given:

Height = 13cm

Using Area formula:

Area = 1/2×b×h

60 = 1/2×b×13

60 = 13/2×b

b = 60×2/13

b =  120/13

Hence base = 9.23 cm