anaisgiap anaisgiap

26-04-2022
Mathematics

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area = 756 cm^2
h = 18 cm
a = 39 cm
b = ?

area 756 cm2 h 18 cm a 39 cm b class=

Respuesta :

shusilsunar2005 shusilsunar2005

26-04-2022

Answer:

given,

area= 756cm^2

h = 18cm

a = 39cm

then,

area = (a+b)h/2

756 = (39+b)18/2

756= 351+9b

756-351= 9b

405 = 9b

405/9= b

b = 45cm

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