Solve 2*3.14*5^2+2*3.14*5*8

$$2 \times 3.14 \times 5 ^ { 2 } + 2 \times 3.14 \times 5 \times 8$$

Evaluate

$$408.2$$

Solution Steps

Multiply 2 and 3.14 to get 6.28.

$$6.28\times 5^{2}+2\times 3.14\times 5\times 8$$

Calculate 5 to the power of 2 and get 25.

$$6.28\times 25+2\times 3.14\times 5\times 8$$

Multiply 6.28 and 25 to get 157.

$$157+2\times 3.14\times 5\times 8$$

Multiply 2 and 3.14 to get 6.28.

$$157+6.28\times 5\times 8$$

Multiply 6.28 and 5 to get 31.4.

$$157+31.4\times 8$$

Multiply 31.4 and 8 to get 251.2.

$$157+251.2$$

Add 157 and 251.2 to get 408.2.

$$408.2$$

Factor

$$\frac{13 \cdot 157}{5} = 408\frac{1}{5} = 408.2$$