EM-2390

Standard form

E Math · Secondary 4 · Hard · Standard form

A square tile has side length 3.5 cm.

(a) Express the side length in metres.
(b) Hence find the area of the tile in square metres.

Give both answers in standard form.

(a) $3.5\times10^{-2}$ m (b) $1.225\times10^{-3}$ m $^2$
(a) $3.5\times10^{-3}$ m (b) $1.225\times10^{-5}$ m $^2$
(a) $0.35\times10^{-1}$ m (b) $12.25\times10^{-4}$ m $^2$
(a) $3.5\times10^{2}$ m (b) $1.225\times10^{3}$ m $^2$

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