Question #9b727

1 Answer
MJ
Jan 2, 2018

#306 sq. cm#

Explanation:

When sides of a triangle are given, use Heron's formula to find the area of the triangle.

Area = #sqrt(p(p-a)(p-b)(p-c)#

Where, #p# = #(a+b+c)/2#

and, #a, b, c# are sides of the triangle.

Therefore, #p# = #(51+37+20)/2# = #54 cm#

and, Area = #sqrt(54xx(54-51)xx(54-37)xx(54-20)#

= #sqrt(54xx3xx17xx34# = #306 sq. cm#

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