Question

Решите пожалуйста
Даю 35 баллов ​

Answer 1

Ответ:

1) 100

2) 120

3) 324

4) 15

Объяснение:

1)

4a = 40

a = 10

S = a^2 = 10^2 = 100

2)

(a + a +2)*2=44

a = 10

b = a + 2 = 12

S = 12*10 = 120

3)

S = (a+b)/2*h

a = 5

b = 15+7 = 22

h = 24

S = 324

4)

sin30 = п/6 = 0.5

S = (a+b)/2*h

h = c*sin30

c = 5

a = 3

b = 9

S = (3+9)/2*5*0.5 = 15