Question

solve this question of grade 7 exampler

Answer 1

correct answer is 36m bro

Answer 2

Answer:

36 cm

Step-by-step explanation:

Area of right angle triangle= 1/2 ×the product of lengths of the sides containing right angle.

Let the base of the triangle be 'b'

therefore,

$54 \: = \frac{1}{2} \times 12 \times b$

dividing 12 by 2(half),

$54 = 6\times b$

therefore,

$b = \frac{54}{6}$

hence,

$base \: (b) =9$

Hence to find hypotenuse l(AC),

by using Pythagoras theorem,

$(hypotenuse) {}^{2} =(base) {}^{2} + (height) {}^{2}$

$hypo {}^{2} = 12 {}^{2} + 9 {}^{2}$

$hypo { }^{2} = 225$

$hypo = \sqrt{225}$

therefore,

$hypotenuse = 15$

Therefore, perimeter of triangle =

sum of lengths of all 3 sides.

perimeter=12+15+9

=36

hope it helps dear....❤️

plz mark my ans as brainliest.....