Evaluate the expression 3.14(a2 + ab) when a = 4 and b = 3. (Input decimals only, such as 12.71, as the answer.

87.92

Step-by-step explanation:

3.14(a²+ab)=

Plugging in values for a and b

3.14(4²+4×3)=

3.14(16+12)=

3.14(28)=

87.92

Given,

a=4

b=3

Nowz

hope this helps .

Good luck on your assignment...

12.5 feet

step-by-step explanation:

step-by-step explanation: given equation a = h(b 1+b 2)

also we are given values of a, h and b 1 as :

a = 16, h = 4, and b 1 = 3.

in order to solve it for b 2, we need to plug the given values of   a, h and b 1 .

therefore, plugging values of   a, h and b 1   in given equation, we get

16 = 4( 3 + b 2)

first dividing both sides by 4, we get

4 = 3 + b 2

subtracting 3 from both sides, we get

4 -3 = 3 -3 + b 2

1 = b 2.