Question

find the areaof a circle whose diameter is- (i)28cm (ii) 1.4 m.

Answer 1

Answer:

Step-by-step explanation:

Diameter=28 cm

Then radius =14cm

Area =πr×r

22/7 ×14×14

28×22

616cm square

Now 2nd

Diameter =1.4m

Radius = .7m

Now

Area = 22/7 × .7×.7

Area = 1.54 metre square or 154 cm square