\(2.8 \times {10^2} =\)

Explanation

Do the exponents first. \(10 \times 10 = 100\). Then multiply \(2.8 \times 100 = 280\)

Side box 5cm, bottom right long side 4 cm, front bottom short side 3cm. The volume of this box is______

\({9^2} \times {9^4} = \)

\(\sqrt {{{(4 + x)}^2}} = \)

The reciprocal of \(\frac{1}{9}\) is

Find the measure of x.

What is \( \sqrt 4 \times \sqrt {64} ? \)