Question

GIVING 100 POINTS FOR THESE 3 PROBLEMS

Answer 1

Explanation:

`A=(a+b)/(2)*h=(4+7)/(2)*3=16.5cm^2`

`A=(ab)/(2) =(4*6)/(2) =12in^2`

`A=wl=6*5=30in^2`

`12+30=42in^2`

`A=(a+b)/(2)h=(28+40)/(2)*30=1020ft^2`

Wall = A=
`(ab)/(2) =(6*30)/(2)=90ft^2`

Answer 2

1. 16.5cm²
2. 42in²
3. 90ft²

Explanation:

Question 1:

A = (a+b/2)h

A = (4+7/2)3

A = (11/2)3

A = (5.5)3

A = 16.5cm²

Question 2:

A = bh/2 = 6*4/2 = 24/2 = 12

A = bh = 6*5 = 30

A = 12 + 30 = 42

A = 42in²

Question 3:

A = (a+b/2)h

A = (28+40/2)30

A = (68/2)30

A = (34)30

A = 1020ft²

A = bh/2

A = 30*6/2

A = 180/2

A = 90ft²

Best of Luck!