Question 11 MarkWrite $'T'$ for true and $'F'$ for false. Area of a circle $=2\pi\text{r}^2.$AnswerFalse. Area of a circle $=\pi\text{r}^2$View full question & answer→
Question 21 MarkWrite $'T'$ for true and $'F'$ for false. Area of $a\ ||\ gm$ = (base $\times $ height)AnswerTrue.View full question & answer→
Question 31 MarkWrite $'T'$ for true and $'F'$ for false. Area of a triangle = (base $\times $ height)AnswerFalse. Area of a triangle $=\frac{1}2{}\times\text{Base}\times\text{Height}$View full question & answer→
Question 41 MarkWrite $'T'$ for true and $'F'$ for false. Circumference of a circle $=2\pi\text{r}.$AnswerTrue.View full question & answer→
Question 51 MarkFill in the blanks. If $l, b$ and $h$ be the length, breadth and height respectively of a room, then area of its $4$ walls = sq units.AnswerIf $l, b$ and $h$ be the length, breadth and height respectively of a room, then area of its $4$ walls $= [2h(l + b)]$ sq units.View full question & answer→
Question 61 MarkFill in the blanks. $1 \text { hectare }= \mathrm{~m}^2$.Answer$1 \text { hectare }=\underline{10000} \mathrm{~m}^2$. $\text { since } 1 \text { hecta metre }=100 \mathrm{~m}$ $1 \text { hectare }=(100 \times 100) \mathrm{m}^2$ $=10000 \mathrm{~m}^2$View full question & answer→
Question 71 MarkFill in the blanks. If $d_1$ and $d_2$ be the diagonals of a rhombus, then its are is sq units.AnswerIf $d_1$ and $d_2$ be the diagonals of a rhombus, then its are is $\frac{1}{2} d_1 d_2$ sq units.View full question & answer→
Question 81 MarkFill in the blanks. $1$ are $=\mathrm{~m}^2$.Answer$1$ are $=\underline{100} \mathrm{~m}^2$.View full question & answer→
Question 91 MarkFill in the blanks. If each side of a triangle is a $cm$, then its area = $cm^2$.AnswerIf each side of a triangle is a $cm$ , then its area $=\frac{\sqrt{3}}{4} \mathrm{a}^2 \mathrm{~cm}^2$.View full question & answer→