Find the areas of the rectangles whose sides are: (a) 3 cm and 4 cm (b) 12 m and 21 m (c) 2 km and 3 km (d) 2 m and 70 cm
Answers
Answered by
3
Answer:
12cm²
Step-by-step explanation:
length= 3cm
breadth= 4cm
Area= length×breadth
= 3×4cm²
=12cm²
b). l= 12m
b= 21m
Area= l×b
= 12×21m²
= 252m²
c). l= 2km
b= 3km
Area= l×b
= 2×3
= 6km²
d.) l= 2m
b= 70cm
70/100m (As 1cm= 1/100m)
= 7/10m
Area= l×b
= 2× 7/10m
= 14/10
= 1.4m²
Answered by
3
Answer:
a) l*b =12m
b) l*b = 12*21=252m
c) l*b=2*3=6m
d) l*b=2*0.7=1.4m
Step-by-step explanation:
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