Question

20. From a metal sheet in the shape of a a
trapezium with parallel sides 64 cm and
100 cm and height 56 cm, 28 circles of radius
7 cm are cut out. Find the area of the metal
sheet that is left.​

Answer 1

Answer:

280cm²

Step-by-step explanation:

A of trapezium= 1/2 x sum of length of parallel sides x height=1/2x164x56=4592cm²

area of circle=πr²=22/7 x 7 x7=22x7=154

area of 1 circle= 154

area of 28 circles=28 x 154=4312cm²

area left=4592-4312=280cm²