Question

No.	Radius $\left(r\right)$	Diameter $\left(d\right)$	Circumference	Area of circle
$\left(1\right)$	$0.7m$	________	________	_______
$\left(2\right)$	__________	$84cm$	________	_______
$\left(3\right)$	$140metre$	________	________	_______
$\left(4\right)$	$4.9cm$	________	________	_______
$\left(5\right)$	_________	$70cm$	________	_______

Answer 1

As we know $d=2r,circumference=2\pi randarea=2\pi r^2$

We get the answers as below:

(1) $1.4m,4.4m,1.54sqm$.
(2) $42cm,264cm,5544sqcm$
(3) $280metre,880metre,61600sqm$
(4) $9.8cm,30.8cm,75.64sqcm$
(5) $35cm,220cm.3850sqcm$.