Question

the base of an issoceles triangle is 24 cm and it's area is 60 cm square. find its perimeter

Answer 1

base =24
area=60
two other side sum =area of triangle - base length
therefore, sum of two side = 60-24=36
therefore,
perimeter of triangle =sum of all side
= sum of two side +base
perimeter = 24+12=36

Answer 2

: Given

➝ issoceles triangle is 24 cm and it's area is 60 cm square

➝ Perimeter 30 m

: Find

find its perimeter

: Solution

$perimeter = 23 m$

$a = 60m \\ b = 12 m \: (isoceles) \\ c = 2$

We know that the formula of perimeter is

$a + b + c$

Now,

$30 = 12 + 12 + c$

$30 + 24 + c$

$c = 30 - 24$

$c = 6$

$5 = a + b + c \:$

$= 12 + 11 + 6 =$

$\implies \sf{x= {\dfrac </p><p></p><p>{\cancel{36}}{\cancel{2}}}}$

$\implies$15 CM

$\implies area$

$\implies \sqrt{5} (5 - a) (5 - b) \: (5 - c)$

$\implies \sqrt{15} (15 - 12)(15 - 12)(15 - 6)$

$\implies \: \sqrt{15 \times 3 \times 3 \times 9}$

$\implies \sqrt{3 \times 5 \times 3 \times 3 \times 3 \times 3}$

$\implies 3 \times \times 3 \sqrt{</p><p>3 \times 5}$

$\implies 9 \sqrt{15} cm \: ans$